US20040025961A1 - Effluent purifying device - Google Patents

Effluent purifying device Download PDF

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Publication number
US20040025961A1
US20040025961A1 US10/311,572 US31157203A US2004025961A1 US 20040025961 A1 US20040025961 A1 US 20040025961A1 US 31157203 A US31157203 A US 31157203A US 2004025961 A1 US2004025961 A1 US 2004025961A1
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US
United States
Prior art keywords
effluent
purification plant
vessel
tank
chamber
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.)
Abandoned
Application number
US10/311,572
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English (en)
Inventor
Bernard Beaulieu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HTCI
Original Assignee
HTCI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HTCI filed Critical HTCI
Assigned to HTCI reassignment HTCI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEAULIEU, BERNARD
Publication of US20040025961A1 publication Critical patent/US20040025961A1/en
Abandoned legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C02F1/685—Devices for dosing the additives
    • C02F1/686—Devices for dosing liquid additives

Definitions

  • the subject of the present invention is a plant for the physico-chemical and bacteriological purification of water.
  • the effluent purification plant according to the invention includes:
  • a pump delivering the effluent in a pulsed manner into a chamber placed on the upper face of the clarification tank;
  • At least one metering pump for adding an effluent coagulating or flocculating reactant into said chamber
  • a delivery pipe taking the effluent laden with reactants from said chamber into the bottom part of a flocculation vessel placed inside the clarification tank, in which vessel a sludge bed forms, the effluent flowing upward through said bed and being clarified in contact with the latter.
  • the plant according to the invention achieves a BOD abatement of more than 70% and excellent filtration of metals.
  • BOD or biological oxygen demand which is the oxygen consumption of the microorganisms present in the effluent in order to assimilate the organic substances in this effluent.
  • the flocculation vessel comprises a frustoconical upper part extended by a cylindrical lower part into which the pipe runs.
  • the effluent laden with reactants is introduced into a region whose volume is relatively restricted, namely the cylindrical part of the flocculation vessel. In this restricted volume, the flocculation is particularly intense.
  • the sludge formed by the accumulation of flocs may spill over from the flocculation vessel under the effect of an increase in the load.
  • the flocculation takes place dynamically and is self-regulated. This is because, whatever the load to which the plant is subjected, the flocculation always takes place optimally, on the one hand ensuring intense flocculation in the cylindrical part and, on the other part, spilling the excess sludge out of the flocculation vessel.
  • the delivery pipe comprises a first tube, one of the ends of which runs into the chamber and the other end of which is provided with radial homogenizing openings above the surface of the frustoconical vessel and a second tube, of larger diameter than the diameter of the first tube, the upper end of which covers the circumferential homogenizing openings of the first tube and the lower end of which runs into the bottom part of the frustoconical vessel.
  • the configuration of the delivery pipe allows the effluent and the reactants to be homogeneously mixed before being introduced into the bottom part of the flocculation vessel.
  • the lower part of the clarification tank has a frustoconical part which receives the sludge spilling over the flocculation vessel and a pump extracts the sludge collected in the frustoconical part of the clarification vessel.
  • the sludge that spills out of the flocculation vessel is collected on a defined surface of the base of the clarification tank.
  • This sludge can be easily extracted by a pump. Load variations may therefore be absorbed without any difficulty and the sludge bed is regulated autonomously.
  • calibrated openings are provided in the upper part of the clarification tank so as to allow the clarified effluent to be poured into a storage tank surrounding the clarification tank.
  • the storage tank surrounds the clarification tank, thereby making it possible to obtain a particularly compact plant in which the ground space occupied is markedly less than the plants of the prior art.
  • the lower end of the delivery pipe has a divergent frustoconical section so as to improve the dispersion of the effluent in the sludge bed.
  • a filter material is placed between the clarification tank and the storage tank, the clarified effluent flowing through said filter material before being stored in the bottom part of the storage tank.
  • the metering pumps introduce reactants into the bottom part of the mixture chamber, upstream of a static mixer placed on an effluent feed pipe, and into the bottom of the cylindrical part of the flocculation vessel, respectively.
  • the reactants are therefore introduced into the plant at points where their action is optimum.
  • the effluent clarification plant includes:
  • a pipe of larger diameter than the delivery pipe and coaxial with the latter, extending between the wall and the filtration vessel.
  • the upper edge of the frustoconical part of the flocculation vessel is contiguous with the internal face of the tank.
  • the filtration vessel has, on its lower face, openings protected by strainers allowing the filtered water to flow out.
  • the filter substance allows residual pollutants at the outlet of the clarification vessel to be reduced.
  • a pump sucks the clarified effluent out of the storage tank and introduces it into at least one annular chamber, placed on the external face of the storage tank, containing a granulate that fixes bacteriological elements.
  • the clarified effluent is set in motion in an annular chamber containing a granulate that fixes the bacteriological elements.
  • the vortex flow undergone by the effluent in the annular chamber allows there to be remarkably good contact between the granulate and the effluent and consequently excellent and rapid fixing of the bacteria.
  • the BOD abatement reaches more than 95%.
  • the annular chambers are four in number, each communicating with the one adjacent thereto via a conduit.
  • Each of the annular chambers contains a granulate with the property of fixing specific bacteria, so that as the effluent passes in succession through the four chambers a remarkably good biological treatment is achieved.
  • a recovery pump sucks up the clarified effluent in the upper annular chamber and reinjects it into the lower chambers.
  • This recovery pump maintains a regular annular velocity of the effluent in which the granulate is in suspension.
  • the storage tank, the clarification tank, the flocculation vessel and the annular chambers are made of plastic.
  • FIG. 1 is a sectional view of the plant according to the invention.
  • FIG. 2 shows the effluent purification plant according to the invention incorporated into a treatment installation.
  • FIG. 3 shows an alternative embodiment of the invention, intended to deliver drinking water in isolated sites.
  • the effluent purification plant comprises a cylindrical storage tank 1 .
  • a cylindrical clarification tank 2 is placed concentrically inside the tank 1 .
  • the clarification tank 2 in its upper part, has uniformly distributed calibrated circular openings 3 and, in its lower part, has a frustoconical section 4 .
  • the concentric tanks 1 and 2 are joined by an annular platform 5 on which a filter material 8 rests.
  • the annular platform 5 is pierced by uniformly distributed openings 6 .
  • the openings 6 are each covered by a strainer 7 .
  • a flocculation vessel 12 is placed inside the tank 2 .
  • the vessel 12 consists of a frustoconical upper part 13 that has a downwardly decreasing cross section and is extended by a cylindrical lower part 14 .
  • the flocculation vessel 12 is provided, on its lower face, with feet 15 that rest on the bottom of the tank 2 .
  • An extraction pipe 17 runs between the feet 15 of the flocculation vessel 12 , a pump 18 doing the extraction.
  • a chamber 20 is placed on the upper face of the tank 2 .
  • the chamber 20 is fed by a pump 21 with effluent to be treated.
  • a feed pipe 10 delivers the effluent to be treated into the chamber 20 , the displacement to be made being performed by a pump 21 .
  • the feed pipe enters the chamber 20 tangentially, in such a way that the effluent is introduced into the chamber tangentially with an antivortex effect.
  • a static mixer 11 is placed in the feed pipe upstream of the chamber 20 .
  • Metering pumps 22 , 23 , 24 inject flocculating or coagulating reactants into the bottom part of the chamber 20 , into the feed pipe 10 , upstream of the static mixer 11 , and into the bottom of the cylindrical part of flocculation base 12 , respectively.
  • a vertical delivery pipe 25 extends from the chamber 20 into the cylindrical part 14 of the flocculation vessel 12 .
  • the delivery pipe 25 comprises a first tube 26 that runs into a second tube 27 of larger diameter than the diameter of the tube 26 .
  • the tube 26 runs into the chamber 20 and its lower end is provided with radial openings 28 .
  • a hemispherical element 29 blocks off the lower end of the tube 26 .
  • the tube 27 covers the openings 28 of the tube 26 and extends down to the cylindrical part of the flocculation vessel 12 .
  • the tank 1 receives four superposed annular chambers 31 , 32 , 33 , 34 .
  • Each chamber communicates with the chamber that is adjacent to it via a conduit 35 .
  • a pump 36 is provided that takes in from the bottom of the tank 1 via a pipe 37 and discharges into the lower annular chamber 31 .
  • a recovery pump 39 takes in from the upper annular chamber 34 and delivers into the two intermediate chambers 32 and 33 .
  • An air circuit 38 introduces compressed air into each of the annular chambers 31 , 32 , 33 and 34 and into each of the strainers 7 .
  • the annular chambers are each equipped with a manhole 41 allowing access to the inside of the chambers.
  • the upper annular chamber 34 extends up to the top of the storage tank 1 and is provided with an opening 43 that opens to the outside.
  • a reactant is introduced into the effluent upstream of the static mixer, the latter ensuring that the effluent and the reactant are very rapidly mixed.
  • Suction of the effluent by the pump 21 takes place intermittently, for example 15 to 30 seconds of suction followed by a rest time of 15 to 60 seconds, so that the effluent is introduced into the chamber 20 in a pulsed manner.
  • the pump 22 injects a coagulating or flocculating reactant into the effluent.
  • These reactants may be ferric chloride, aluminum sulfate or polymers and they depend on the type of effluent to be treated.
  • the action of the pumps 22 and 23 corresponds to an effluent pulsation period.
  • the effluent is brought into contact with a sludge bed consisting of flocs.
  • the flocs are put into suspension by the pulsations that set the effluent in motion.
  • the organic or inorganic pollutants aggregate on these flocs and as the effluent gradually passes through the sludge bed it becomes clarified.
  • Introduction of flocculating reactant by the pump 24 makes it possible to intensify the flocculation.
  • the clarified effluent Since the clarified effluent has a lower density than the flocs forming the sludge bed, it spills out of the clarification tank via the openings 3 made in the latter.
  • This filter substance may consist of particles of quartz, pozzolana, active carbon, diatomaceous earth or pumice stone and makes it possible to reduce the residual load of the effluent after clarification.
  • the filter substance may be washed by countercurrently introducing a water/air mixture via the nozzles 9 .
  • the introduction of this mixture takes place simultaneously with, and in equal volume as, extraction of the excess sludge by the pump 18 so as not to disturb the clarification dynamics.
  • the effluent has undergone a physico-chemical treatment and is therefore clear. It is stored in the lower part of the storage tank.
  • the effluent is then sucked up by the pump 36 and, after air has been added, it is discharged tangentially into the annular chamber 31 so as to create a vortex inside this chamber.
  • the chamber 31 contains a granulate that fixes the bacteria present in the effluent. Inside the annular chamber, the granulate is put into suspension and agitated under the effect of the vortex flow. By putting this granulate into suspension and agitating it, the bacteriological pollutants present in the effluent are fixed remarkably well.
  • the pump 39 sucks up the effluent into the annular chambers 32 , 33 and 34 that communicate via the conduits 35 . It maintains a constant velocity in said annular chambers by reinjecting the effluent sucked up from the upper chamber 34 into the intermediate chambers 32 and 33 .
  • Each of the chambers 31 , 32 and 33 contains a specific granulate (active carbon, sand or calibrated polystyrene beads) that acts on a specific bacterium in such a way that when the effluent is extracted from the annular chamber 34 via the opening 43 it has undergone a complete bacteriological treatment.
  • the effluent may undergo a subsequent treatment, for example an addition of disinfectant represented by the reference 45 in FIG. 2.
  • FIG. 3 shows an embodiment of the invention intended for delivering drinking water in isolated sites.
  • the plant according to the invention is fed via a hand pump 50 .
  • the tank 2 is divided by two horizontal walls 51 and 52 that define an upper part 47 , an intermediate part 48 and a lower part 49 .
  • the upper part has a chamber 20 into which a pipe 25 runs via an opening made in the wall 52 .
  • the delivery pipe 25 connects the chamber 20 to the flocculation vessel 12 located in the lower part of the tank 2 .
  • the lower end of the pipe 25 has a divergent frustoconical section 57 .
  • the flocculation vessel 12 rests on the bottom of the tank 2 and its frustoconical upper part 13 joins the internal wall of the tank 2 .
  • the wall 51 is pierced by a circular opening onto which a discharge pipe 56 concentric with the delivery pipe 25 is connected.
  • the discharge pipe 56 has radial overflow openings 59 at its upper end and terminates in a filtration tank 60 filled with a filter material such as sand.
  • a pipe 66 allows the tank 60 to be filled with filter material.
  • the bottom of the filtration tank 60 is provided with openings 61 protected by strainers 62 .
  • Each strainer 62 is provided with a cleaning nozzle 65 connected to the pump 50 .
  • Each of the upper, intermediate and lower parts of the tank 2 is provided with a draining valve 61 , 62 , 63 .
  • the hand pump 50 thanks to a manual three-way valve 67 , can suck up a fluid coming from a well 68 or coming from the intermediate part of the tank 2 .
  • this pump delivers either into the upper part of the tank 2 or into a pipe 70 that feeds the cleaning nozzles 65 .
  • valves 67 and 68 are set so as to suck up nonpotable water from a well 68 and deliver this water into the upper part of the tank 2 .
  • a flocculating or coagulating reactant is introduced into the chamber 20 by a pump (not shown).
  • the water is brought into contact with a sludge bed consisting of flocs.
  • the divergent frustoconical section of the delivery pipe 25 allows excellent dispersion of the water in the sludge bed. The water is therefore clarified on contact with the fluidized sludge bed.
  • the clarified water undergoes a filtration operation.
  • the water leaves the tank 60 via the openings 61 protected by the strainer 62 and is stored in the intermediate part 48 .
  • the water may be withdrawn via the valve 62 , in order to be consumed.
  • the water may also undergo a second clarification cycle by setting the valves 67 and 68 in such a way that the pump 60 sucks up, from the intermediate part 48 , water that has undergone a first clarification cycle and delivers this water into the upper part 47 in order to undergo a further clarification cycle.
  • the valves 67 and 68 may also be set in such a way that water is sucked up from the intermediate part 49 and delivered via the pipe 70 into the cleaning nozzles 65 .
  • the cleaning nozzles 65 open into the strainers 62 and the water sent countercurrently cleans the filter medium. During this operation, the valve 63 is open.
  • the invention thus provides a particularly compact effluent purification plant of low installation costs, while being capable of carrying out excellent physico-chemical and bacteriological purification.
  • this purification plant may be installed in the form of a module that incorporates the electronics for controlling the various pumps and rests on a transportable platform.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Biological Treatment Of Waste Water (AREA)
US10/311,572 2000-06-15 2001-06-12 Effluent purifying device Abandoned US20040025961A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0007642A FR2810310B1 (fr) 2000-06-15 2000-06-15 Dispositif de purification d'effluent
FR0007642 2000-06-15
PCT/FR2001/001817 WO2001096246A1 (fr) 2000-06-15 2001-06-12 Dispositif de purification d'effluent

Publications (1)

Publication Number Publication Date
US20040025961A1 true US20040025961A1 (en) 2004-02-12

Family

ID=8851294

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/311,572 Abandoned US20040025961A1 (en) 2000-06-15 2001-06-12 Effluent purifying device

Country Status (14)

Country Link
US (1) US20040025961A1 (fr)
EP (1) EP1292542A1 (fr)
JP (1) JP2004503368A (fr)
KR (1) KR20030009539A (fr)
CN (1) CN1443139A (fr)
AP (1) AP2002002686A0 (fr)
AU (1) AU2001267632A1 (fr)
BR (1) BR0111568A (fr)
CA (1) CA2412487A1 (fr)
EA (1) EA004018B1 (fr)
FR (1) FR2810310B1 (fr)
MA (1) MA26049A1 (fr)
WO (1) WO2001096246A1 (fr)
ZA (1) ZA200210208B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060222104A1 (en) * 2005-04-05 2006-10-05 Braithwaite Richard N Feed forward amplifier system and method using the pilot frequency from a positive feedback pilot generation and detection circuit to improve second loop convergence
US20080185321A1 (en) * 2005-03-16 2008-08-07 Bernard Beaulieu Effluent Purifying Plant with Centralized Structure
US20110192780A1 (en) * 2006-01-20 2011-08-11 Bernard Beaulieu Household effluent purufication plant
WO2012042530A1 (fr) * 2010-09-27 2012-04-05 Tata Consultancy Services Limited Appareil pour la purification de l'eau
AT515773A4 (de) * 2014-10-24 2015-12-15 Thomas Ing Mag Wurmbrand Filter
US9782697B2 (en) 2015-02-27 2017-10-10 Recovered Energy, Inc. Liquid refinement
US10343088B2 (en) 2015-02-27 2019-07-09 Recovered Energy, Inc. Liquid refinement
US10343089B2 (en) 2015-02-27 2019-07-09 Recovered Energy, Inc. Liquid refinement
US10384967B2 (en) * 2014-07-24 2019-08-20 Oasys Water LLC Water treatment systems and methods

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2899823B1 (fr) * 2006-04-18 2008-08-29 Labono Sas Dispositif d'epuration d'effluent
KR100930827B1 (ko) * 2007-10-25 2009-12-10 지에스건설 주식회사 수처리용 고액분리장치
US8157988B2 (en) 2008-10-23 2012-04-17 Veolia Water Solutions & Technologies Support Ballast flocculation and sedimentation water treatment system with simplified sludge recirculation, and process therefor
WO2011129955A1 (fr) * 2010-04-14 2011-10-20 Univation Technologies, Llc Appareil et procédés de séparation de particules d'un liquide

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1030366A (en) * 1911-08-21 1912-06-25 David L Winters Water-purifying apparatus.
US5728295A (en) * 1996-04-19 1998-03-17 Fuji Hunt Photographic Chemicals, Inc. Apparatus for removing metal ions and/or complexes containing metal ions from a solution

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FR1081214A (fr) * 1953-04-27 1954-12-16 Entpr Et De Pose Pour Tous Pro Perfectionnements apportés aux bassins de traitement et de décantation des eaux
BE543014A (fr) * 1954-11-23
FR2105515A5 (en) * 1970-09-02 1972-04-28 Sogreah Extractors for treatment appts - for liquids polluted with mud, sand, fibres
FR2339575A1 (fr) * 1976-01-30 1977-08-26 Degremont Procede et installation de traitement des eaux par precipitation cristalline et decantation
DE3612313A1 (de) * 1986-04-11 1987-10-15 N A G Innovations Und Umweltte Verfahren und vorrichtung zur trennung der feststoffe von der traegerfluessigkeit bei suspensionen
FI89703C (fi) * 1989-03-06 1993-11-10 Wiser Oy Anordning foer behandling av vaetskor, speciellt avfallsvatten
DE4225957C2 (de) * 1992-08-06 1998-12-03 Adalbert Dr Ing Nagy Verfahren zum Reinigen von Flüssigkeiten und Vorrichtung zum Durchführen dieses Verfahrens
FR2767523B1 (fr) * 1997-08-25 1999-10-15 Sarl Drive Station d'epuration a structure modulaire autoporteuse

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1030366A (en) * 1911-08-21 1912-06-25 David L Winters Water-purifying apparatus.
US5728295A (en) * 1996-04-19 1998-03-17 Fuji Hunt Photographic Chemicals, Inc. Apparatus for removing metal ions and/or complexes containing metal ions from a solution

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080185321A1 (en) * 2005-03-16 2008-08-07 Bernard Beaulieu Effluent Purifying Plant with Centralized Structure
US7524415B2 (en) 2005-03-16 2009-04-28 Bernard Beaulieu Effluent purifying plant with centralized structure
US20060222104A1 (en) * 2005-04-05 2006-10-05 Braithwaite Richard N Feed forward amplifier system and method using the pilot frequency from a positive feedback pilot generation and detection circuit to improve second loop convergence
US20110192780A1 (en) * 2006-01-20 2011-08-11 Bernard Beaulieu Household effluent purufication plant
US8048298B2 (en) * 2006-01-20 2011-11-01 Bernard Beaulieu Household effluent purification plant
WO2012042530A1 (fr) * 2010-09-27 2012-04-05 Tata Consultancy Services Limited Appareil pour la purification de l'eau
US10384967B2 (en) * 2014-07-24 2019-08-20 Oasys Water LLC Water treatment systems and methods
AT515773A4 (de) * 2014-10-24 2015-12-15 Thomas Ing Mag Wurmbrand Filter
AT515773B1 (de) * 2014-10-24 2015-12-15 Thomas Ing Mag Wurmbrand Filter
US9782697B2 (en) 2015-02-27 2017-10-10 Recovered Energy, Inc. Liquid refinement
US9782699B2 (en) 2015-02-27 2017-10-10 Recovered Energy, Inc. Liquid refinement
US9782698B2 (en) 2015-02-27 2017-10-10 Recovered Energy, Inc. Liquid refinement
US10343088B2 (en) 2015-02-27 2019-07-09 Recovered Energy, Inc. Liquid refinement
US10343089B2 (en) 2015-02-27 2019-07-09 Recovered Energy, Inc. Liquid refinement

Also Published As

Publication number Publication date
ZA200210208B (en) 2003-11-30
JP2004503368A (ja) 2004-02-05
FR2810310B1 (fr) 2002-07-26
CA2412487A1 (fr) 2001-12-20
EP1292542A1 (fr) 2003-03-19
MA26049A1 (fr) 2004-04-01
BR0111568A (pt) 2004-07-06
AU2001267632A1 (en) 2001-12-24
FR2810310A1 (fr) 2001-12-21
KR20030009539A (ko) 2003-01-29
EA004018B1 (ru) 2003-12-25
WO2001096246A1 (fr) 2001-12-20
AP2002002686A0 (en) 2002-12-31
EA200300022A1 (ru) 2003-04-24
CN1443139A (zh) 2003-09-17

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Legal Events

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AS Assignment

Owner name: HTCI, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BEAULIEU, BERNARD;REEL/FRAME:014310/0754

Effective date: 20030720

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION