RU2497198C2 - Защитный элемент, содержащий магнитную текучую среду - Google Patents
Защитный элемент, содержащий магнитную текучую среду Download PDFInfo
- Publication number
- RU2497198C2 RU2497198C2 RU2011153088/12A RU2011153088A RU2497198C2 RU 2497198 C2 RU2497198 C2 RU 2497198C2 RU 2011153088/12 A RU2011153088/12 A RU 2011153088/12A RU 2011153088 A RU2011153088 A RU 2011153088A RU 2497198 C2 RU2497198 C2 RU 2497198C2
- Authority
- RU
- Russia
- Prior art keywords
- magnetic
- core
- protective element
- element according
- magnetic fluid
- Prior art date
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 63
- 239000011553 magnetic fluid Substances 0.000 title claims abstract description 55
- 239000002245 particle Substances 0.000 claims abstract description 72
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000011554 ferrofluid Substances 0.000 claims description 36
- 239000007787 solid Substances 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 13
- 239000006249 magnetic particle Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 239000000049 pigment Substances 0.000 claims description 9
- 238000012795 verification Methods 0.000 claims description 9
- 239000000696 magnetic material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000002608 ionic liquid Substances 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 239000004408 titanium dioxide Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 10
- 238000005253 cladding Methods 0.000 abstract 1
- 239000011257 shell material Substances 0.000 description 50
- 239000012071 phase Substances 0.000 description 39
- 239000000463 material Substances 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000007791 liquid phase Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000004020 luminiscence type Methods 0.000 description 5
- 230000005415 magnetization Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000002105 nanoparticle Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 238000009827 uniform distribution Methods 0.000 description 4
- 239000000976 ink Substances 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000003094 microcapsule Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IQQRAVYLUAZUGX-UHFFFAOYSA-N 1-butyl-3-methylimidazolium Chemical compound CCCCN1C=C[N+](C)=C1 IQQRAVYLUAZUGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000011185 multilayer composite material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- MCTWTZJPVLRJOU-UHFFFAOYSA-O 1-methylimidazole Chemical compound CN1C=C[NH+]=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-O 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000612 Sm alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000002122 magnetic nanoparticle Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- PYVOHVLEZJMINC-UHFFFAOYSA-N trihexyl(tetradecyl)phosphanium Chemical compound CCCCCCCCCCCCCC[P+](CCCCCC)(CCCCCC)CCCCCC PYVOHVLEZJMINC-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/369—Magnetised or magnetisable materials
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/128—Viewing devices
-
- B42D2033/04—
-
- B42D2033/16—
-
- B42D2035/34—
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Computer Security & Cryptography (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Optics & Photonics (AREA)
- Credit Cards Or The Like (AREA)
- Soft Magnetic Materials (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009023982.0 | 2009-06-05 | ||
| DE102009023982A DE102009023982A1 (de) | 2009-06-05 | 2009-06-05 | Sicherheitselement |
| PCT/EP2010/003257 WO2010139427A1 (fr) | 2009-06-05 | 2010-05-28 | Élément de sécurité comprenant un fluide magnétique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2011153088A RU2011153088A (ru) | 2013-07-20 |
| RU2497198C2 true RU2497198C2 (ru) | 2013-10-27 |
Family
ID=42712634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2011153088/12A RU2497198C2 (ru) | 2009-06-05 | 2010-05-28 | Защитный элемент, содержащий магнитную текучую среду |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2437945A1 (fr) |
| DE (1) | DE102009023982A1 (fr) |
| RU (1) | RU2497198C2 (fr) |
| WO (1) | WO2010139427A1 (fr) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2758253B1 (fr) * | 2011-09-20 | 2018-12-12 | Bank Of Canada | Dispositifs d'affichage de sécurité et leur utilisation |
| EP2867030B1 (fr) | 2012-07-02 | 2016-08-24 | Orell Füssli Sicherheitsdruck AG | Elément de sécurité, procédé de fabrication d'un tel élément de sécurité, et procédé de vérification de l'authenticité d'un document de sécurité pourvu d'un tel élément de sécurité |
| WO2014086495A1 (fr) * | 2012-12-07 | 2014-06-12 | Giesecke & Devrient Gmbh | Élément de sécurité visuellement variable, doté d'une structure à couches colorées visuellement variable |
| DE102012222583A1 (de) | 2012-12-07 | 2014-06-26 | Giesecke & Devrient Gmbh | Sicherheitssystem für Sicherheitspapiere, Wertdokumente oder dergleichen |
| DE102013225516B4 (de) | 2013-12-10 | 2018-09-06 | Bundesdruckerei Gmbh | Sicherheitsdokument mit verdecktem Sicherheitsmerkmal |
| DE102013225515B4 (de) | 2013-12-10 | 2018-06-21 | Bundesdruckerei Gmbh | Überlagerungssicherheitselement und Verifikationsverfahren |
| DE102014110573A1 (de) * | 2014-07-25 | 2016-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Mit einer Signatur auf Basis von superparamagnetischen und/oder weichmagnetischen Nanopartikeln versehener Gegenstand, Verfahren zu dessen Herstellung und Verwendung von superparamagnetischen und/oder weichmagnetischen Nanopartikeln zum Sichern von Gegenständen gegen Fälschung und Nachahmung |
| EP3237224B1 (fr) * | 2014-12-24 | 2024-06-19 | National Research Council of Canada | Dispositif de sécurité dynamique |
| DE102016000590A1 (de) * | 2016-01-21 | 2017-07-27 | Giesecke & Devrient Gmbh | Optisch variables Element mit magnetisch ausrichtbaren Pigment |
| DE102016000587A1 (de) * | 2016-01-21 | 2017-07-27 | Giesecke & Devrient Gmbh | Optisch variables Element mit magnetisch ausrichtbaren Pigment |
| DE102017009507A1 (de) * | 2017-10-12 | 2019-04-18 | Giesecke+Devrient Currency Technology Gmbh | Verfahren zur Temperatur- oder Zeitüberwachung eines Gegenstandes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0580891A1 (fr) * | 1992-05-29 | 1994-02-02 | Japan Capsular Products, Inc. | Ecran pour l'enregistrement magnétique des images |
| WO2003089250A2 (fr) * | 2002-04-19 | 2003-10-30 | Giesecke & Devrient Gmbh | Document de securite |
| RU2253573C2 (ru) * | 1999-03-30 | 2005-06-10 | Миннесота Майнинг Энд Мэнюфекчуринг Компани | Маркировочное изделие (варианты) и способ его изготовления (варианты) |
| DE69833653T2 (de) * | 1997-06-11 | 2006-08-10 | Securency Pty. Ltd., Craigieburn | Sicherheitsdokument mit einem magnetischen wasserzeichen und verfahren zu seiner herstellung |
| US20090039644A1 (en) * | 2007-07-20 | 2009-02-12 | Spectra Systems Corporation | Systems and methods for using microscopic capsules containing orientable materials for document security and processing applications |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5158921B2 (ja) * | 2005-12-28 | 2013-03-06 | 日本発條株式会社 | 識別媒体 |
| WO2008055523A1 (fr) * | 2006-11-07 | 2008-05-15 | Stichting Dutch Polymer Institute | Fluides magnétiques et leur utilisation |
-
2009
- 2009-06-05 DE DE102009023982A patent/DE102009023982A1/de not_active Withdrawn
-
2010
- 2010-05-28 EP EP10724294A patent/EP2437945A1/fr not_active Withdrawn
- 2010-05-28 WO PCT/EP2010/003257 patent/WO2010139427A1/fr not_active Ceased
- 2010-05-28 RU RU2011153088/12A patent/RU2497198C2/ru not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0580891A1 (fr) * | 1992-05-29 | 1994-02-02 | Japan Capsular Products, Inc. | Ecran pour l'enregistrement magnétique des images |
| DE69833653T2 (de) * | 1997-06-11 | 2006-08-10 | Securency Pty. Ltd., Craigieburn | Sicherheitsdokument mit einem magnetischen wasserzeichen und verfahren zu seiner herstellung |
| RU2253573C2 (ru) * | 1999-03-30 | 2005-06-10 | Миннесота Майнинг Энд Мэнюфекчуринг Компани | Маркировочное изделие (варианты) и способ его изготовления (варианты) |
| WO2003089250A2 (fr) * | 2002-04-19 | 2003-10-30 | Giesecke & Devrient Gmbh | Document de securite |
| US20090039644A1 (en) * | 2007-07-20 | 2009-02-12 | Spectra Systems Corporation | Systems and methods for using microscopic capsules containing orientable materials for document security and processing applications |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2011153088A (ru) | 2013-07-20 |
| EP2437945A1 (fr) | 2012-04-11 |
| WO2010139427A1 (fr) | 2010-12-09 |
| DE102009023982A1 (de) | 2010-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20170529 |