EP1183419A1 - Method and apparatus for preparing paper pulp from used paper - Google Patents
Method and apparatus for preparing paper pulp from used paperInfo
- Publication number
- EP1183419A1 EP1183419A1 EP00935750A EP00935750A EP1183419A1 EP 1183419 A1 EP1183419 A1 EP 1183419A1 EP 00935750 A EP00935750 A EP 00935750A EP 00935750 A EP00935750 A EP 00935750A EP 1183419 A1 EP1183419 A1 EP 1183419A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grid
- fibers
- elements
- contaminants
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/20—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a horizontal axis
Definitions
- the present invention relates to the field of stationery and more specifically the preparation of pulp from the recycling of old paper in order to produce paper.
- Contaminants can take many forms. We find, in particular, metallic particles (staples), sand and gravel, adhesive materials, pieces of plastic ...
- mineral fillers incorporated into the paper for certain products (magazines, printing and writing papers, etc.).
- the presence of mineral fillers may be undesirable, in particular for the production of sanitary papers. In this case it is necessary to separate them from the dough.
- the preparation of pulp with waste paper is the overall process, ranging from the disintegration of waste paper up to the various decontamination stages, possibly the elimination of inks (deinking) and mineral fillers (washing), and may include one or more two bleaching steps allowing the fibers to regain their original whiteness.
- the pulp produced will be used to feed the paper machine.
- Step A The classic process for preparing pulp from old paper always begins with the disintegration of the papers and the suspension of the fibers, using a pulper (Step A).
- the pulper is an equipment equipped with a rotor (or turbine), which causes sufficiently strong agitation of the waste paper, mixed with water, so that the bonds between the fibers (hydrogen bonds) break one after the other .
- a paper pulp from old paper is thus reconstituted.
- Step B Coarse decontamination. It involves eliminating by sieving the coarsest elements, and in particular plastics.
- Step C The elimination, by hydrocyclone, of large heavy particles: large sands, pieces of glass, and metallic particles such as staples.
- Step D The elimination of small plastics and other contaminants of intermediate size by sieving with holes (or purifying with holes) in two or three stages, consisting in passing the dough through small holes (between 1 and 3 mm) and retain contaminants larger than the holes.
- Step E The elimination of small contaminants, essentially of granular appearance (as opposed to flat contaminants) by a slit treatment (between 0.1 and 0.3 mm), operating according to the same principle as the treatment with holes. The holes are replaced by slots, where the fibers, given their small diameter, manage to pass.
- - Step F For so-called “white” papers, elimination of the inks by one or more flotation cells. The inks are separated using small air bubbles with the possible help of a soap or a surfactant.
- Stage G The elimination of fine sands and large black dots (small heavy contaminants) by batteries in several stages of hydrocyclones.
- Step H In certain cases, the elimination of small contaminants of density less than 1 by hydrocyclone.
- Step I More particularly for tissue papers, the elimination of mineral fillers by washing the pulp. Most of the water is evacuated, carrying with it the majority of the charges.
- Step J Thickening of the pulp, in order to facilitate storage before the paper machine or to prepare the pulp for hot dispersion or refining.
- Step K In certain cases, dispersion of the residual contaminants, by a disperser or pulper, so as to make these contaminants not visible to the eye. In other cases, transformation of the mechanical properties of the dough by a refiner.
- Step L Clarification of the filtrates by a dissolved air microflotator.
- the suspended matter is collected in flocs then floated on the surface using air microbubbles and polymers (flocculants and coagulants).
- Step M Thickening of the solids extracted during Step L.
- Step N Treatment of waste water by a treatment plant.
- Step 0 Bleaching of fibers for certain applications.
- the dough preparation processes currently in use are a more or less complete combination of the previously described steps, each carried out by different equipment. Between each step, the dough is generally pumped, resulting in high energy consumption. Some steps require the use of chemicals. It is frequent, and particularly when one wants to produce "white" papers imposing restrictive optical criteria, that the recycling process of old papers is not competitive compared to the use of virgin cellulose.
- the object of the invention is to replace, in its basic version, several of the devices corresponding to the above-mentioned stages H, J, L, M, or even C, D, E, F, G and I, whatever the type of paper to be produced, also allowing significant savings in energy and chemicals. Recycling old paper will thus become more competitive, even for the most demanding applications.
- the invention also allows a much lower footprint.
- FIGS 1 to 4 show several practical embodiments of the invention, corresponding to several applications.
- Figures 5 and 6 show specific details and parts of the invention.
- FIG. 1 represents a section of a practical embodiment of the invention applied more particularly to sanitary papers (known as “tissue”) in its basic configuration having, in addition to the basic functions, a device for recovering the fibers having passed through through the grid (6) and their recovery by the tube (14) in the center of the device, a two-stage clarification device, and a device for reintegrating the recovered elements (13).
- tissue sanitary papers
- FIG. 1 represents a section of a practical embodiment of the invention applied more particularly to sanitary papers (known as “tissue”) in its basic configuration having, in addition to the basic functions, a device for recovering the fibers having passed through through the grid (6) and their recovery by the tube (14) in the center of the device, a two-stage clarification device, and a device for reintegrating the recovered elements (13).
- FIG. 2 represents a section of a practical embodiment of the invention applied more particularly to sanitary papers having, in addition to the basic functions: a preliminary treatment of the pulp by elimination of fine sands and other “heavy” or “light” contaminants In the sedimentation chamber (25) and a slotted filing; a device for recovering fibers having passed through the grid (6) and their concentration in the chamber (33); a device for reintegrating the recovered elements (13).
- FIG. 3 represents a cross-section of a practical embodiment of the invention applied more particularly to printing writing papers and magazine newspapers, having, in addition to the basic functions: a preliminary treatment of the pulp by elimination of fine sands and other contaminants " heavy ”or“ light ”in the sedimentation chamber (25) and a slotted classification; a preclarification device in the chamber (33); a device for reintegrating the recovered elements (13).
- FIG. 3 represents a cross-section of a practical embodiment of the invention applied more particularly to printing writing papers and magazine newspapers, having, in addition to the basic functions: a preliminary treatment of the pulp by elimination of fine sands and other contaminants " heavy ”or“ light ”in the sedimentation chamber (25) and a slotted classification; a preclarification device in the chamber (33); a device for reintegrating the recovered elements (13).
- FIG. 4 represents a section of a practical embodiment of the invention more particularly applied to cardboard papers and packaging papers, having, in addition to the basic functions: a preliminary treatment of the pulp by elimination of fine sands and other contaminants "Heavy” or "light” in the sedimentation chamber (25) and a slotted classification; a preclarification device in the chamber (33) .; a device for reintegrating elements extracted during clarification with dough by deflectors (39).
- FIG. 5 represents a section of the orifices of the classification grid with hole / slots.
- Figure 6 corresponds to the braking device of the fibers extracted at the periphery (8) by spiral tubes.
- the invention For sanitary papers, known as “tissue”, the invention consists, in its basic version, of grouping together the functions of washing, deinking, removing particles of density less than 1, thickening the fibers, d thickening of the suspended matter from the filtrates, clarification of the water and elimination of contaminants of density less than 1.
- the invention therefore replaces the apparatus corresponding to steps F, H, I, J, L, M of the conventional process for preparing paper pulp.
- Figures 1 and 2 show, in particular, two practical embodiments of the invention applied to this quality of paper.
- the present invention consists in regrouping, in its basic version, the functions of deinking, fiber thickening, water clarification, and elimination of contaminants of density less than 1.
- the invention combines steps F, H, J, L, M and possibly I of the conventional process for preparing paper pulp.
- FIG. 3 represents, in particular, a practical embodiment of the invention for this application.
- the present invention consists in combine, in its basic version, the functions of fiber thickening, water clarification, elimination of contaminants with a density less than 1, and possibly long fiber / short fiber fractionation.
- the invention replaces steps H, J, L, M of the conventional process for preparing paper pulp.
- Figure 4 is a practical representation of the invention for this application.
- the proposed device consists of a body (1) rotating at high speed integrally driving all of the internal components of the device.
- the body of the device is driven by a motor not shown in the figures.
- Step A Beforehand the old paper must be disintegrated via a pulper (Step A), and undergo a coarse decontamination (Step B). In its basic version ( Figure 1) the dough must still undergo Steps C, D and E of the conventional process before introduction into the device.
- the paste thus previously treated and freed from the most important contaminants is introduced along the axis of the device, through a central duct (2).
- the fins (3) allow the dough to be rotated at the same angular speed as the device. All the incoming and outgoing conduits (2), (12), (13), (14), (21), (22) and (37) are connected to mechanical seals, not shown in the figures, allowing d '' ensure a tight connection with fixed conduits.
- the speed of rotation of the device is such that at its periphery the bodies are subjected to an artificial gravity field which can exceed 1000 times the Earth's gravity.
- the dough has already undergone steps A to E of the conventional process and now contains only small contaminants (generally less than 0.5 mm in diameter).
- the paste to be treated is conveyed (4) along a grid with small holes (6), the majority of the water passing through the grid while the fibers are retained due to the small diameter of the holes.
- the fibers are entrained, due to a density greater than 1, and under the effect of the artificial gravity field linked to the rotation of the device, towards the periphery of the device and end up in the dough concentration chamber (7).
- Contaminants of density less than 1 which do not pass through the grid (6), migrate towards the axis of the device taking into account the artificial field of gravity created by the rotation of the device, where they are collected and evacuated by the conduit (22).
- the filtrates and the water, having passed through the holes in the grid (6), are intended for different treatments depending on the applications.
- one of the objectives of the invention is to recover the fibers and fines (fragments of fibers) which have passed through the grid (6). It also involves eliminating inks and mineral fillers from the water in order to reuse it in order to close the water circuits as much as possible and reduce the consumption of fresh water. Unclarified water is first treated immediately after passing through the grid. This involves recovering the fibers, which are also among the heaviest and largest elements of the filtrates in question.
- the first solution represented in FIG. 1, consists in bringing back the cellulosic elements to be recovered towards the axis of the device. Unclarified water is routed through line (9). The suction speed of the pipe (9) towards the feed zone (15) of the clarification zone (16) is not sufficient to entrain the fibers and the other heavier bodies, which thus sediment at the periphery of zone (5). These bodies are recovered by a pipe (10) which routes them towards the axis of the device. The section of this pipe is studied so as to allow a speed of the current greater than the speed of sedimentation of the fibers.
- This opening may be crossed by a counter current of water supplied by a pipe (12). The flow of this water would be adapted so that the speed of the current which passes through the opening is greater than the speed of sedimentation of the fibers, while the denser elements, which manage to go up the current taking into account their higher sedimentation rate, are collected in the concentration chamber (19) before being extracted by the nozzles (20).
- the recovered fibers, routed through the pipes (10) and extracted through the center of the device by the tube (14), are optionally treated by conventional deinking means before being reintegrated into the pulp in the device.
- the second solution for separating the fibers to treat them and then recover them consists in extracting them from the periphery of the device.
- Figure 2 shows a representation of this configuration. This involves including a sedimentation zone (33) at the periphery of the zone (9) and downstream of the grid (6) where the fibrous elements which have sedimented are concentrated under the effect of the artificial gravity field caused by the rapid rotation of the device. These elements can then be discharged through the periphery of the device by the nozzles (34). The waters to be clarified pass directly from the zone (33) to the clarification zone (16).
- the fibers extracted by one of the two means envisaged are previously treated, if necessary, and can be reintegrated in the device.
- This reintegration is carried out by a pipe (13) and allowing the routing of the fibers and other elements to be integrated at the periphery of the device at the points of introduction (13b) in the zone (4).
- This location on the periphery, close to the pulp concentration zone (7), makes it possible to limit the losses of fibers and other reintegrated elements, the only desired function being the thickening of the pulp and reintegrated elements.
- the filtration grid (6) may, for diameters greater than the reintroduction point (13b), have smaller holes in order to limit the passage through the grid of the reintegrated elements.
- the grid (6) will also have a fractionation function, ie classification between long fibers and fibers short, the long fibers being retained by the grid while the short fibers pass through.
- the size of the holes will be studied as a function of the desired fractionation effect.
- the water and the elements that have passed through the grid (6) will be collected in the chamber (9) and led to the clarification zone (16) consisting of cones close to each other, which may be in plastic or composite material with a density close to 1.
- the water to be treated, framed by the separation cones, is directed from the periphery towards the axis of the device.
- each cone can be extended by evacuation channels (17) which allow the solids captured by the cones to continue their way towards the periphery in the middle of the stream of unclarified water at the inlet clarification.
- These channels shown in FIG. 2, communicate themselves with the solids evacuation pipe (18), before joining the concentration chamber (19) and being expelled from the device by the nozzles (20) .
- These nozzles (20) have a permanent or sequential opening depending on the case and the applications.
- a similar process will be used to separate and eliminate towards the axis of the device, thanks to the action of the artificial gravity field, the contaminants of density less than 1 which migrate towards the center of the device where they are collected by the conduit (37).
- the cones of the clarification zone (16) can be extended by the channels (36). This application is shown in Figure 2.
- the invention may be provided with a clarification in 2 time, when the water passes successively through a preclarification zone (33) and then into a final clarification zone (16), the two zones operating in series.
- Figures 2, 3 and 4 show this application.
- the preclarification zone (33) is intended to eliminate the most important particles, which in their movement are liable to create micro-turbulences which disturb the sedimentation of the finest particles.
- the final clarification zone (16) with very close separation plates, allows sedimentation of the finest elements according to the principle already presented. Items that are separated during the pre-clarification by sedimentation in the chamber (33) are led to the periphery of the device where they are evacuated to the periphery of the device.
- tissue sanitary papers For certain applications, and in particular those intended for the production of “tissue” sanitary papers (FIGS. 1 and 2), the solids resulting from the clarification and ejected by the nozzles (20) are not recovered by the process for the manufacture of the paper, the majority being mineral fillers incompatible with the manufacture of tissue papers.
- the invention will allow all or part of the elements that have been separated during clarification to be reintegrated directly into the dough.
- Figure 4 illustrates such an application.
- Inclined deflectors (39) make it possible to divert a part of the elements having sedimented in the sedimentation chamber (33) towards the pulp concentration chamber (7).
- the opening of these deflectors (39) can be fixed or adjustable in order to allow mixing in desired proportions between the fibers and the reintegrated elements, in particular the fillers.
- a more complete version of the invention will include the function described by step G, that is to say the elimination of fine sands as well as numerous contaminants.
- the dough is introduced into a chamber (25). Contaminants with a density less than 1 are drawn towards the axis of the device and discharged through the orifices (22b) connected to the tube (22).
- the conduit (27) is provided with orifices allowing the separation and then the extraction of the contaminants of density greater than 1 which have a speed more sedimentation than fiber. These elements sediment and are separated by the orifices (30) and extracted from the device by the nozzles (38).
- the conduit (27) will have a suitable inclination and section to avoid the sedimentation of the fibers and the passage of the latter in the orifices (30). To increase the horizontal speed of the fibers and limit the risk of sedimentation, the conduit (27) will be supplied with water extracted in the central part of the chamber (25).
- a more complete version of the invention consists in adding a classification with slots and / or holes. It is then a question of carrying out steps B to E of the conventional process.
- This classification is carried out by a grid will preferably be conical (23).
- the grid (23) will be upstream of the grid (6) ( Figures 2, 3 and 4).
- the dough is introduced by the axis of the device around the grid (23) according to the same principle as the filtration grid (6).
- the fibers pass through the slits (or holes), given their small diameter, while certain contaminants are retained. Large contaminants (which do not pass through the grid) and with a density greater than 1 sediment and concentrate at the periphery of the device where they are extracted by several extraction nozzles (38).
- Contaminants with a density less than 1 will migrate towards the axis of the device and will be extracted through a central pipe (22).
- a separation chamber (25) upstream already comprising a step of removing light contaminants can make it unnecessary, for many applications, the removal of light contaminants by the center of the device.
- Backwashing cycles, making it possible to limit clogging of the grids, will then be sufficient to avoid deposits of light contaminants in the central part of the device.
- the water having passed through the slits (23), carrying with it the fibers in suspension, is conveyed towards the axis of the apparatus through a conduit (24) towards the zone (4), the section of which is studied so to impose a sufficient speed on the fluid to prevent too rapid sedimentation of the fibers towards the periphery of the device.
- an opening at the most peripheral part of the duct (24) will allow the evacuation of the heaviest elements by sedimentation.
- This opening may be crossed by a counter current of clear water, the flow rate of which would be adjusted so that the speed of this counter current is greater than the sedimentation rate of the longest fibers and less than that of the contaminants to be separated.
- the slit grid has the drawback of constituting a limit on the capacity of the device.
- the open area of the grid can be very small and prevent the flow of flow authorized by all of the other functions.
- the peripheral arrangement of these openings makes it possible to limit the entrainment of fibers, since these have already passed through slots (23).
- the contaminants found at the opening have a density greater than 1. The objective is that these contaminants are not entrained before the water diverted through the openings (29).
- the openings will be arranged slightly behind the path traveled by the contaminants on the one hand, and will have a funnel shape allowing possible contaminants near the opening (29) to settle towards the periphery without be driven by the openings (29).
- the diverted water will then be routed directly to the clarification area. Any contaminant having nevertheless used these conduits will not pose any problem. It will however be possible, with the addition of a water separation device, not shown in the figures, to conduct the water diverted through the conduit (29) upstream of the filtration grid (6) in order to improve the washing effect.
- the classification grids (23) will have a suitable shape, in order to improve their efficiency.
- the conical shape of the grid with slits or holes makes it possible to facilitate contact with the fibers and their passage through the grid.
- the angle of the cone will be studied in order to facilitate the passage of the fibers.
- this conical shape also has the consequence of concentrating the contaminants of density greater than 1 on the grid.
- the grid is provided, for most applications using relatively contaminated materials, with "stepped" angle breaks (28).
- Figures 2, 3 and 4 show such a grid (23) with the stairs (28).
- the angle break eliminates contaminants from the grid so that they gain speed before meeting the grid again. This device will therefore facilitate their sedimentation towards the periphery of the grid.
- the orifices have a radial direction.
- the inlet of the orifices is conical (40), the cones of the adjacent orifices will meet, so that there is no flat surface between two cones.
- the objective is to concentrate the fibers at the entrance of the orifices, and to orient them parallel to the orifices, the average length of the fibers being much greater than the width of the orifices.
- the section of the orifices increases (42) in order to prevent them from clogging.
- Figure 6 shows schematically two orifices in profile showing these different arrangements.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Centrifugal Separators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT102320A PT102320A (en) | 1999-06-09 | 1999-06-09 | METHOD AND APPARATUS FOR THE PREPARATION OF PAPER PASTE FROM PAPER STITCHES |
PT10232099 | 1999-06-09 | ||
PCT/PT2000/000006 WO2000075422A1 (en) | 1999-06-09 | 2000-06-08 | Method and apparatus for preparing paper pulp from used paper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1183419A1 true EP1183419A1 (en) | 2002-03-06 |
EP1183419B1 EP1183419B1 (en) | 2004-03-31 |
Family
ID=20085865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00935750A Expired - Lifetime EP1183419B1 (en) | 1999-06-09 | 2000-06-08 | Method and apparatus for preparing paper pulp from used paper |
Country Status (15)
Country | Link |
---|---|
US (1) | US6811655B1 (en) |
EP (1) | EP1183419B1 (en) |
JP (1) | JP3787306B2 (en) |
KR (1) | KR100495098B1 (en) |
CN (1) | CN1131908C (en) |
AT (1) | ATE263270T1 (en) |
AU (1) | AU5116500A (en) |
BR (1) | BR0011686B1 (en) |
CA (1) | CA2376795C (en) |
DE (1) | DE60009485T2 (en) |
ES (1) | ES2218164T3 (en) |
MX (1) | MXPA01012690A (en) |
PT (2) | PT102320A (en) |
RU (1) | RU2218458C2 (en) |
WO (1) | WO2000075422A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI109135B (en) * | 1999-09-21 | 2002-05-31 | Metso Paper Inc | Method and apparatus for treating wood pulp |
WO2004011718A1 (en) * | 2002-07-30 | 2004-02-05 | Finidro - Financiamentos Energéticos Lda. | Installation for purifying papermaking pulp |
JP5098001B2 (en) | 2005-07-20 | 2012-12-12 | 株式会社シード | Waste paper processing equipment |
CN100435890C (en) | 2007-07-10 | 2008-11-26 | 陕西坚瑞化工有限责任公司 | Fire extinguishing aerosol composition suitable for use for precise electric equipment |
DE102011120630A1 (en) * | 2011-12-09 | 2013-06-13 | Aerocycle Gmbh | Process for recycling waste paper |
CN103191013B (en) * | 2012-01-09 | 2015-04-01 | 金卫医疗科技(上海)有限公司 | Curved surface body container with red blood cell barrier function in continuous separation of blood plasma |
CN107558285B (en) * | 2016-08-23 | 2020-10-09 | 绍兴冉奕无纺布有限公司 | Waste book treatment process |
CN113481745B (en) * | 2021-08-04 | 2022-09-16 | 迁安市正昊纸业有限公司 | Environment-friendly papermaking process |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2924794C2 (en) * | 1979-06-20 | 1980-11-13 | J.M. Voith Gmbh, 7920 Heidenheim | Device for dewatering a fiber suspension |
FR2478489B1 (en) * | 1980-03-21 | 1985-08-30 | Centre Tech Ind Papier | PROCESS AND DEVICE FOR SEPARATING PARTICLES IN A FLUID, PARTICULARLY FOR THE PURIFICATION OF PAPER SUSPENSIONS |
ZA839064B (en) * | 1982-12-06 | 1985-07-31 | Broken Hill Pty Co Ltd | Centrifugal separation method and apparatus |
FR2636251B1 (en) * | 1988-09-13 | 1992-01-17 | Lamort E | DEVICE FOR SEPARATING PARTICLES FROM A LIQUID, PARTICULARLY FOR THE PURIFICATION OF PAPER SUSPENSIONS |
DE4105903C2 (en) * | 1991-02-26 | 1994-10-06 | Escher Wyss Gmbh | Solid bowl centrifuge as a cleaner for material suspensions |
-
1999
- 1999-06-09 PT PT102320A patent/PT102320A/en not_active IP Right Cessation
-
2000
- 2000-06-08 DE DE60009485T patent/DE60009485T2/en not_active Expired - Lifetime
- 2000-06-08 AT AT00935750T patent/ATE263270T1/en not_active IP Right Cessation
- 2000-06-08 US US09/980,687 patent/US6811655B1/en not_active Expired - Fee Related
- 2000-06-08 AU AU51165/00A patent/AU5116500A/en not_active Abandoned
- 2000-06-08 WO PCT/PT2000/000006 patent/WO2000075422A1/en active IP Right Grant
- 2000-06-08 BR BRPI0011686-6A patent/BR0011686B1/en not_active IP Right Cessation
- 2000-06-08 KR KR10-2001-7015853A patent/KR100495098B1/en not_active IP Right Cessation
- 2000-06-08 CN CN008086222A patent/CN1131908C/en not_active Expired - Fee Related
- 2000-06-08 EP EP00935750A patent/EP1183419B1/en not_active Expired - Lifetime
- 2000-06-08 PT PT00935750T patent/PT1183419E/en unknown
- 2000-06-08 CA CA002376795A patent/CA2376795C/en not_active Expired - Fee Related
- 2000-06-08 RU RU2002100085/12A patent/RU2218458C2/en not_active IP Right Cessation
- 2000-06-08 MX MXPA01012690A patent/MXPA01012690A/en active IP Right Grant
- 2000-06-08 JP JP2001501691A patent/JP3787306B2/en not_active Expired - Fee Related
- 2000-06-08 ES ES00935750T patent/ES2218164T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0075422A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2376795A1 (en) | 2000-12-14 |
RU2218458C2 (en) | 2003-12-10 |
BR0011686B1 (en) | 2010-07-27 |
CN1354812A (en) | 2002-06-19 |
EP1183419B1 (en) | 2004-03-31 |
DE60009485T2 (en) | 2005-03-24 |
DE60009485D1 (en) | 2004-05-06 |
MXPA01012690A (en) | 2003-09-04 |
ATE263270T1 (en) | 2004-04-15 |
ES2218164T3 (en) | 2004-11-16 |
KR100495098B1 (en) | 2005-06-14 |
AU5116500A (en) | 2000-12-28 |
PT1183419E (en) | 2004-08-31 |
CA2376795C (en) | 2008-04-08 |
BR0011686A (en) | 2002-03-05 |
PT102320A (en) | 2000-12-29 |
JP3787306B2 (en) | 2006-06-21 |
JP2003501563A (en) | 2003-01-14 |
WO2000075422A1 (en) | 2000-12-14 |
KR20020047044A (en) | 2002-06-21 |
CN1131908C (en) | 2003-12-24 |
US6811655B1 (en) | 2004-11-02 |
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