CN1284440A - Microcapsule magnetic display board - Google Patents
Microcapsule magnetic display board Download PDFInfo
- Publication number
- CN1284440A CN1284440A CN 00109731 CN00109731A CN1284440A CN 1284440 A CN1284440 A CN 1284440A CN 00109731 CN00109731 CN 00109731 CN 00109731 A CN00109731 A CN 00109731A CN 1284440 A CN1284440 A CN 1284440A
- Authority
- CN
- China
- Prior art keywords
- layer
- display board
- magnetic
- micro
- dispersion
- 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
Abstract
The invention provides a microcapsule magnetic recording sheet which is enable production without danger on work, enable sufficient use even in a low-temperature area and substantially eliminate the influence of magnetism even in a high-temperature area. This microcapsule magnetic recording sheet has a solid dispersion layer consisting of a dispersion of microcapsules containing a binder, a dispersion and flaky magnetic particulates on a transparent film. In such a case, the boiling point of the solvent constituting the dispersion is higher than 150 DEG C and the melting point thereof is less than -20 DEG C, and the dispersion contains a particulate thickening agent. The microcapsule magnetic recording sheet consists of only the self-supporting layer of the solid dispersion layer or has a colored layer on the surface of either thereof, or has the colored layer on the solid dispersion layer surface on the side opposite to the side having the transparent film of the solid dispersion layer. Also, the colored layer consists of black ink.
Description
The present invention relates to micro-capsulated magnetic display board, even more particularly the present invention relates to still spendable at low temperatures good micro-capsulated magnetic display board.
In the past, people know micro-capsulated magnetic display board, usually, it is used for by by hand-written, and the mechanism of magnetic etc. carries out visual record or deletion mode, information transmission.Specifically, people know that micro-capsulated magnetic display board has two kinds of forms, wherein a kind of is following micro-capsulated magnetic display board, wherein following microcapsules are scattered in the bonding agent, this microcapsules inner sealing have spherical magnetic and colouring agent (such as, TiO 2 pigment etc.), it is coated on the substrate, or forms membranaceously, another kind is similarly following micro-capsulated magnetic display board in addition, wherein as magnetic, do not adopt spherically, but adopt flatly, even laminar magnetic particle is (with reference to the clear 55-29880 of TOHKEMY number, the flat 2-146082 of TOHKEMY number, the clear 50-160046 communique of TOHKEMY).
The manufacture method of these micro-capsulated magnetic display boards all is general; usually; following microcapsules are coated on the base material with bonding agent; this microcapsules inside includes dispersing liquid and the magnetic particle that is scattered in wherein, and adds colouring agent, and protective clear layer is set as required thereon; form above-mentioned plate by such structure; with this state, can use separately, or use according to a face using it for the magnetic recording card.
Particularly, recently, along with cash card with information receptacle, popularizing of the magnetic recording card of prepaid card etc., in order to see the record content in these cards by eyes, people wish to have the record display part on this card, so people have also developed following technology, in this technology, with above-mentioned magnetic recording card and micro-capsulated magnetic display board combination.As the micro-capsulated magnetic display board of the record display part that is used for this magnetic recording card, have above-mentioned two kinds of micro-capsulated magnetic display boards.Wherein, as the form that adopts laminar magnetic, include special fair 7-70039 communique of JP or the flat 5-16579 communique of TOHKEMY etc.These forms are by adding thermoplastic resin in the microcapsules that adopted, and have size distribution, and film-strength can realize the advantage of industrial production aspect.
But, can be used for various areas though have the magnetic recording card (below be called " release ") of such magnetic display part, but in the low especially zone of temperature, owing to have thermoplastic resin in the deposit in microcapsules, so just, has following problems, promptly under the low temperature below 0 ℃, the mobile of magnetic particle etc. is very blunt, thereby can not use.In addition, also because the daily faint magnetic force that belongings produced that carries is subjected to the magnetic force influence easily, so, have following problems, if promptly with the radio of portable phone or pocket, or portable CD, MD, by bus certificate etc. press close to such as, release is because the magnetic force that they produced, the display part of release is subjected to long-term pollution, thereby can't discern demonstration.In addition, problem with following operation aspect promptly with thermoplastic resin and solvent the time, must be heated to more than 150 ℃, but, it is heated just to be attended by very large danger like this owing to the solvent that is adopted is the petroleum-type of catching fire and being forbidden on the fire service law.
So the inventor etc. have carried out various analyses, research to these aspects, found that and to prevent that by employing precipitating reagent from solving these problems.So just, finish the present invention.So the 1st problem to be solved by this invention provides a kind of release,, even under the low-temperature region, still can use fully even it is at low temperature.In addition, the 2nd problem that the present invention will solve is to provide a kind of micro-capsulated magnetic display board, even it under the situation of high temperature, still is difficult to be subjected to the magnetic force influence.Also have, the 3rd problem that the present invention will solve is to provide a kind of micro-capsulated magnetic display board, and it can be made under the situation that does not have operation danger.
Above-mentioned problem of the present invention is to provide the described every invention of following claim to realize respectively.
Claim 1 relates to a kind of micro-capsulated magnetic display board, it is characterized in that on the hyaline membrane in micro-capsulated magnetic display board, comprise the solid dispersed layer, this solid dispersed layer is by bonding agent, and the dispersion thing that comprises the microcapsules of dispersion liquid and laminar magnetic particle forms, the solvent boiling point that constitutes this dispersion liquid is greater than 150 ℃, and fusing point is less than-20 ℃, and comprises the particulate thickener.
Claim 2 relates to the described plate of claim 1, it is characterized in that this plate is only formed by the solid dispersed layer.
Claim 3 relates to the described plate of claim 1, it is characterized in that having dyed layer on the opposite side solid dispersed aspect opposite with hyaline membrane one side with solid dispersed layer.
Claim 4 relates to the described plate of claim 2, it is characterized in that on any one surface, having dyed layer in the plate that is only formed by the solid dispersed layer.
Claim 5 relates to the described plate of claim 4, it is characterized in that above-mentioned dyed layer is formed by black ink.
In micro-capsulated magnetic display board of the present invention, because the solvent boiling point that constitutes dispersion liquid is greater than 150 ℃, fusing point is less than-20 ℃, and comprises the particulate thickener, can under the situation of no operatton danger, make like this, the micro-capsulated magnetic display board of manufacturing has following excellent results in addition, promptly can be used for various uses, even and at low temperatures, even low temp area, still can not have the ground of obstruction and use,, still be difficult to be subjected to the influence of magnetic force even in addition at high temperature.In addition, by being used for magnetic card, has the excellent results that to watch the content in the magnetic recording card by naked eyes like this.Have, here, the supporting course of solid dispersed layer own is only formed by the solid dispersed layer again, on these surfaces, does not have hyaline membrane or black colorant layer to wait other layer.
Below embodiments of the invention are more specifically described, still, be the invention is not restricted to this
Embodiment.
Micro-capsulated magnetic display board of the present invention is to adopting the improvement of dispersion liquid and the micro-capsulated magnetic display board of laminar magnetic particle, 150 ℃ of and this micro-capsulated magnetic display board adopts the solvent boiling point of the above-mentioned dispersion liquid of formation greater than, than-20 ℃ of type. of and fusing point is less is specifically; As this solvent; (boiling point is 178 ℃ to have enumerated sec-n-octyl alcohol; Fusing point is-38 ℃); (boiling point is 156.2 ℃ to the 3-enanthol; Fusing point is-70 ℃); (boiling point is 157.1 ℃ to the 1-hexanol; Fusing point is-44.6 ℃); (boiling point is 184.7 ℃ to 2-ethyl-1-hexanol; Fusing point is-70 ℃); 1; 3; (boiling point is 164.7 ℃ to the 5-trimethylbenzene; Fusing point is-44.7 ℃); (boiling point is 169～183 ℃ to butylbenzene; Fusing point is-58～-88 ℃); (boiling point is 177.1 ℃ to the p-cymene; Fusing point is-67.9 ℃); (boiling point is 181.1 ℃ to diethylbenzene; Fusing point is-83.9 ℃); (boiling point is 205.4 ℃ to penta benzene; Fusing point is-75 ℃); (boiling point is 255 ℃ to diamyl benzene; Fusing point is-75 ℃); (boiling point is 213.5 ℃ to benzyl acetate; Fusing point is-51.5 ℃); (boiling point is 184.8 ℃ to isoamyl acetate; Fusing point is-73.2 ℃); (boiling point is 231.2 ℃ to propyl benzoate; Fusing point is-51.6 ℃); (boiling point is 231.2 ℃ to ethyl benzoate; Fusing point is-34.6 ℃); (boiling point is 250.3 ℃ to butyl benzoate; Fusing point is-22.4 ℃); (boiling point is 210 ℃ to two adipic acids; Fusing point is-65 ℃); (boiling point is 280 ℃ to dibutyl maleate; Fusing point is-80 ℃); (boiling point is 339 ℃ to dibutyl phthalate; Fusing point is-35 ℃); (boiling point is 386 ℃ to two phthalic acids; Fusing point is-55 ℃); (boiling point is 284 ℃ to dioctyl phthalate; Fusing point is-25 ℃); Phenyl xylyl ethane (boiling point is 290～305 ℃, and fusing point is-50 ℃). In these compositions, be preferably sec-n-octyl alcohol, butylbenzene, penta benzene, diamyl benzene, benzyl acetate, propyl benzoate, butyl benzoate, dibutyl maleate, dibutyl phthalate, two phthalic acids, dioctyl phthalate and phenyl xylyl ethane.These solvents can use separately, also two or more compositions can be mixed and use.
As particulate thickener used in the present invention, silicic acid anhydride, moisture silicic acid, silicate (sodium metasilicate, potassium silicate, alumina silicate, calcium silicates etc.), micro mist aluminium oxide, Cab-O-sil, diatomite, kaolin, hard paste, mild-clay, bentonite, atomic thin calcium carbonate, utmost point superfine activated calcium carbonate, calcium bicarbonate, aqueous alkaline magnesium carbonate, barium sulfate, benzidine yellow etc. have been enumerated.These compositions can use separately, also can be the mixture more than 2 kinds.Though the addition of particulate thickener depends on the kind of dispersant, relative dispersant, particulate thickener be according to weight percent meter, in 0.2～5% scope, is preferably in 0.4～2% the scope.If the addition of particulate thickener is according to weight percent meter, less than 0.2%, then can't keep enough disperse systems, from time and the mobile aspect of magnetic generation, this addition is bad, if the addition of particulate thickener is according to weight percent meter in addition,, then can counteract the mobile of solids such as magnetic greater than 5%.
Laminar magnetic used in the present invention can generally use in the art, enumerate the powder that following particulate is formed thin slice (laminar), this particulate as, nickel, iron, chromium, aluminium, samarium etc. suitably cooperate and the particulates such as alloy that form.Wherein, be preferably alloys such as iron nickel, iron nickel chromium triangle, iron silicochromium.These alloys also can be use mixing two or more.
In the present invention, the preparation method of microcapsules is well-known in the art, usually, preferably adopt coacervation (such as, with reference to the US2800458 patent specification).At this moment, the composition that preferably will be comprised in microcapsules inside by dispersant disperses.The microcapsules that obtained are with bonding agent; be coated on the substrate; or alternate manner is coated on the substrate, forms microcapsules and disperses cover layer, after drying; obtain the solid dispersed layer; painted black (or other color, such as red, green, dark brown, colors such as green grass or young crops) thereon in addition; as required, the film protective layer can be set.Also have, in the present invention, the embodiment of micro-capsulated magnetic display board also can adopt the own supporting mass that is formed by the solid dispersed layer, the i.e. plate that only forms by the solid dispersed layer, on the record display surface on a surface in this external this solid dispersed layer, hyaline layer (such as, hyaline membrane etc.) is set, on another surface, form black layer or other nonferrous layer with application pattern.Also have, the dyed layer resemble the black layer also can apply black ink or other coloured China ink, also can paste in addition to pay to contain these black synthetic resin films.
The micro-capsulated magnetic display board of Huo Deing also can be used for according under this state in the manner described above, write or wipe literal repeatedly by magnetic pen, or the demonstration occasion used of the mode of draw drawing, but as mentioned above, also can be used as following release, this release is arranged at least one surface in the magnetic recording card of cash card, prepaid card etc., carries out magnetic and shows.As recording method, can realize record deletion by the accurate browing record device (Reader writer) of making MCP200ZD, MCP390TD etc. of nuclear star as market sale.In addition, micro-capsulated magnetic display board of the present invention can be used for other purposes, uses such as the unwanted electromagnetic wave record etc.
Provide embodiments of the invention below, it is more specifically described, but the invention is not restricted to this example.
(the 1st embodiment) fully mixes following material (1), (2) and (3), makes A solution.
(1) the sub-20.0g of laminar fine magnetic-substance particle
(Fe/Ni alloy Fe: Ni=22: 78
Saturated magnetization Ms=4.9emu
Residual magnetization Mr=2.2emu
Magnetic remanence He=1.40e
Average grain diameter 16 μ m
Proportion 6.1)
(2) micro mist silicic acid (particulate thickener, trade name: A Aolao Kiel (ァ ェ ロ ジ Le) 972; Japan's A Aolao Kiel (ァ ェ ロ ジ Le) society's system) 1.0g
(3) two phthalic acid 79.0g
Compound concentration is 5% aqueous gelatin solution 200g, with concentration be 5% gum arabic 200g, they are mixed, making its pH value is 5.5.Add A solution 100g in the solution that is obtained at leisure, by high speed agitator, stirring and emulsifying is the state of 80 μ m to average grain diameter.Then, at leisure this emulsified solution is cooled off, make its temperature that arrives 15 ℃, interpolation concentration is 25% glutaraldehyde water solution 5g, stirs diel, thereby obtains to comprise the microcapsule slurry of laminar magnetic particle.
By the granular membrane of 150 μ, the capsule slurries that obtained are distinguished, obtain the following microcapsules of 150 μ m.Then, these microcapsules are filtered, make the capsule piece, add moisture urethanes resin solution therein, fully stir, obtain to be coated with the application ink composition as moisture bonding agent.
By the scraper coating process, on 75 μ mPET, form the above-mentioned ink composition of 250 μ m, put it in the drying machine that remains on 60 ℃, dry 1 hour, obtain the microcapsules coating plate.In addition, on the capsule layer in this plate, tusche on the screen printing then, at the assigned position of cash card, is undertaken bondingly by the double-sided adhesive band, make cash card (card that has micro-capsulated magnetic display board).On this card, under-10 ℃ environment, carry out lettering by browing record device (Readerwiter) MCP2000ZD (star (ス sunset) accurate society system), thereby can obtain clearly literal.In above-mentioned release, even be coated in inboardly posting, have under the situation of magnetic recording with the certificate by bus of bar code or commutation ticket, still under the situation of the influence that is not subjected to magnetic, read literal fully.
(comparative example) is except as the particulate thickener, alicyclic saturated hydrocarbon resin [thermoplastic resin with 10g, trade name: A Erkang (ァ Le コ Application) P-100, waste river chemical industry (strain)] replace the micro mist silicic acid of the 1.0g described in the foregoing description, and replace with the two phthalic acid 70g of 70g beyond two phthalic acids of 79g, by the method described in the 1st embodiment, obtain the card of carrying magnetic plate.Same as the previously described embodiments, under-10 ℃ environment, MCP2000ZD prints by browing record device (Reader writer), literal do not occur.In addition, in this occasion, owing to must heat A Erkang P-100, until the temperature that reaches 150 ℃, forming solution, is breakneck like this.Then, on the existing information card, paste to pay and to be coated on inboardly, have by bus certificate or the commutation ticket etc. of magnetic recording, can not discern more, can't read literal more with bar code.
(the 2nd embodiment) is different with the PET film (hyaline membrane) described in the 1st embodiment, identical with the 1st embodiment having on the film surface of releasing agent, and the application ink composition that is coated with described in the 1st embodiment is applied, and drying obtains micro-capsulated magnetic display board.Employing is formed at the goods of endless belt with this plate, under-10 ℃ environment, and by the noncontact of magnetic pen, in its surface, shorthand.Can obtain clearly record.In addition, be produced on the inner face of this micro-capsulated magnetic display board, the goods of coating black ink carry out record under these conditions, obtain contrast higher know literal.On this release, even be coated in inboardly posting, have under the situation of magnetic recording with the certificate by bus of bar code or commutation ticket, still under the situation of the influence that is not subjected to magnetic, read literal fully.
Because in micro-capsulated magnetic display board of the present invention, the solvent boiling point that constitutes dispersion liquid is greater than 150 ℃, fusing point is less than-20 ℃, and comprise and prevent precipitating reagent, can under the situation that does not have operation danger, make like this, in addition, the micro-capsulated magnetic display board of manufacturing has following excellent results, uses under the situation that can counteract at the faint magnetic force that can not the reason daily belongings that carry produce.In addition, micro-capsulated magnetic display board of the present invention has following excellent results, promptly owing to adopt magnetic card, the content that can watch magnetic card like this by eyes.
Claims (5)
1. micro-capsulated magnetic display board, it is characterized in that on the hyaline membrane in this micro-capsulated magnetic display board, comprise the solid dispersed layer, this solid dispersed layer is by bonding agent, and the dispersion thing that comprises the microcapsules of dispersion liquid and laminar magnetic particle forms, the solvent boiling point that constitutes this dispersion liquid is greater than 150 ℃, and fusing point is less than-20 ℃, and comprises the particulate thickener.
2. plate according to claim 1 is characterized in that this plate is only formed by the solid dispersed layer.
3. plate according to claim 1 is characterized in that having dyed layer on the opposite side solid dispersed aspect opposite with hyaline membrane one side with solid dispersed layer.
4. plate according to claim 2 is characterized in that on any one surface, having dyed layer in the plate that is only formed by the solid dispersed layer.
5. plate according to claim 4 is characterized in that above-mentioned dyed layer is formed by black ink.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18981199 | 1999-07-05 | ||
| JPP11189811 | 1999-07-05 | ||
| JP2000179700A JP2001075510A (en) | 1999-07-05 | 2000-06-15 | Microcapsule magnetic display sheet |
| JPP12179700 | 2000-06-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1284440A true CN1284440A (en) | 2001-02-21 |
| CN1116180C CN1116180C (en) | 2003-07-30 |
Family
ID=26505702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00109731 Expired - Fee Related CN1116180C (en) | 1999-07-05 | 2000-07-03 | Microcapsule magnetic display board |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2001075510A (en) |
| CN (1) | CN1116180C (en) |
| TW (1) | TW539572B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555611A (en) * | 2011-12-30 | 2012-07-11 | 浙江鼎昇新材料科技有限公司 | Display membrane for wordpad and production process thereof |
| CN105730082A (en) * | 2016-02-29 | 2016-07-06 | 东莞中世拓实业有限公司 | Microcapsule magnetic writing board and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4954454B2 (en) * | 2004-08-26 | 2012-06-13 | 株式会社パイロットコーポレーション | Microcapsule manufacturing method, microcapsule and magnetic display medium using the same |
| EP1875961B1 (en) * | 2005-04-07 | 2018-08-29 | Mitsui Chemicals, Inc. | Capsular fine particle comprising olefinic polymer |
| JP5172093B2 (en) * | 2005-12-28 | 2013-03-27 | 株式会社パイロットコーポレーション | Microcapsule manufacturing method, microcapsule and display medium using the same |
-
2000
- 2000-06-15 JP JP2000179700A patent/JP2001075510A/en active Pending
- 2000-07-03 CN CN 00109731 patent/CN1116180C/en not_active Expired - Fee Related
- 2000-07-04 TW TW89113198A patent/TW539572B/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555611A (en) * | 2011-12-30 | 2012-07-11 | 浙江鼎昇新材料科技有限公司 | Display membrane for wordpad and production process thereof |
| CN102555611B (en) * | 2011-12-30 | 2015-01-07 | 浙江鼎昇新材料科技有限公司 | Display membrane for wordpad and production process thereof |
| CN105730082A (en) * | 2016-02-29 | 2016-07-06 | 东莞中世拓实业有限公司 | Microcapsule magnetic writing board and preparation method thereof |
| CN105730082B (en) * | 2016-02-29 | 2018-08-03 | 东莞中世拓实业有限公司 | A kind of micro-capsulated magnetic board |
Also Published As
| Publication number | Publication date |
|---|---|
| TW539572B (en) | 2003-07-01 |
| CN1116180C (en) | 2003-07-30 |
| JP2001075510A (en) | 2001-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2971916A (en) | Microscopic capsules containing magnetizable material | |
| US5972493A (en) | Microcapsules for magnetic display and magnetic display sheet comprising such microcapsules | |
| US5223360A (en) | Materials coated with plate-like pigments | |
| AU662966B2 (en) | Sold bonded colorant clusters and process for making | |
| CN101360795A (en) | Colourant compositions | |
| EP1083538A1 (en) | Magnetophoretic display panel | |
| CN100411884C (en) | Microcapsule magnetophoretic display sheet capable of writing and erasing | |
| CN100392510C (en) | Micro capsule and application thereof | |
| CN1116180C (en) | Microcapsule magnetic display board | |
| EP0822532A1 (en) | Rewritable indication label for recording medium, recording medium and recording medium case | |
| GB2324273A (en) | Gelatinised microcapsules for magnetic display sheets | |
| EP1315137B1 (en) | Magnetic display | |
| US4654251A (en) | Printing material set for preparing bar-code labels by pressure-sensitive printing method | |
| CN102585676A (en) | Electrophoretic display coating liquid and preparation method thereof | |
| TW486681B (en) | Magnetic material-inverting display panel | |
| CN101609630B (en) | Bistable magnetic display panel and manufacturing method thereof | |
| JPH0971042A (en) | Magnetic recording body and its recording method | |
| EP1267200A1 (en) | Magnetic display device | |
| JPH08314396A (en) | Magnetic recording body | |
| CN100418001C (en) | Magnetophoretic reversal display panel and magnetophoretic reversal display method | |
| CN100357819C (en) | Particle used for image display medium, image display panel using same, and image display | |
| JP3886073B2 (en) | Coloring method of color magnetic particles for magnetic display panel | |
| JPS63153197A (en) | Magnetic recording material | |
| JPH0713206A (en) | Reloadable display medium | |
| JPS6172203A (en) | Color filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DAINIPPON INK AND CHEMICALS, INC. Free format text: FORMER OWNER: NONE Effective date: 20040407 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040407 Address after: Tokyo, Japan Patentee after: Chemitech, Inc. Patentee after: DAINIPPON INK AND CHEMICALS, Inc. Address before: Tokyo, Japan Patentee before: Chemitech, Inc. |
|
| ASS | Succession or assignment of patent right |
Owner name: CHEMI CO., LTD.; NONAKA TADASHI Free format text: FORMER OWNER: CHEMI CO., LTD.; DAINIPPON INK AND CHEMICALS, INC. Effective date: 20061215 Owner name: CHEMI CO., LTD. Free format text: FORMER OWNER: CHEMI CO., LTD.; NONAKA TADASHI Effective date: 20061215 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061215 Address after: Tokyo, Japan Patentee after: Chemitech, Inc. Address before: Tokyo, Japan Co-patentee before: Nonaka Tadashi Patentee before: Chemitech, Inc. Effective date of registration: 20061215 Address after: Tokyo, Japan Co-patentee after: Nonaka Tadashi Patentee after: Chemitech, Inc. Address before: Tokyo, Japan Co-patentee before: DAINIPPON INK AND CHEMICALS, Inc. Patentee before: Chemitech, Inc. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |