MX2023002813A - Dispositivos de seguridad y metodos de fabricacion de los mismos. - Google Patents
Dispositivos de seguridad y metodos de fabricacion de los mismos.Info
- Publication number
- MX2023002813A MX2023002813A MX2023002813A MX2023002813A MX2023002813A MX 2023002813 A MX2023002813 A MX 2023002813A MX 2023002813 A MX2023002813 A MX 2023002813A MX 2023002813 A MX2023002813 A MX 2023002813A MX 2023002813 A MX2023002813 A MX 2023002813A
- Authority
- MX
- Mexico
- Prior art keywords
- manufacture
- methods
- relief elements
- relief
- security devices
- Prior art date
Links
Classifications
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- 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
-
- 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
- B42D25/324—Reliefs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
- B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
-
- 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
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- 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
-
- 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
-
- 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
- B42D25/378—Special inks
- B42D25/382—Special inks absorbing or reflecting infrared light
-
- 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
- B42D25/378—Special inks
- B42D25/387—Special inks absorbing or reflecting ultraviolet light
-
- 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
- B42D25/40—Manufacture
- B42D25/405—Marking
- B42D25/425—Marking by deformation, e.g. embossing
-
- 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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/46—Associating two or more layers using pressure
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/16—Braille printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2200/00—Printing processes
- B41P2200/10—Relief printing
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Methods (AREA)
- Credit Cards Or The Like (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Burglar Alarm Systems (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Abstract
Se proporciona un dispositivo de seguridad que comprende: una estructura en relieve de la superficie formada por uno o más materiales curados sobre un sustrato sustancialmente plano, la estructura en relieve de la superficie que define un conjunto primario de elementos en relieve en una primera escala y un conjunto secundario de elementos en relieve en una segunda escala, que es más pequeña que la primera, el conjunto primario de elementos en relieve que incluye una pluralidad de protusiones elevadas separadas por rebajes y el conjunto secundario de elementos en relieve que está dispuesto en la parte superior de al menos una de las protusiones elevadas y/o en al menos uno de los rebajes. También se proporciona un dispositivo de seguridad que comprende una estructura formada por material(es) curado(s) y una estructura en relieve. También se describen métodos de fabricación.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB2014326.9A GB202014326D0 (en) | 2020-09-11 | 2020-09-11 | Security devices and methods of manufacture thereof |
| GB2014330.1A GB2600673A (en) | 2020-09-11 | 2020-09-11 | Security documents, security document sheets and methods of manufacture thereof |
| GBGB2014329.3A GB202014329D0 (en) | 2020-09-11 | 2020-09-11 | Security devices and methods of manufacture thereof |
| GBGB2014325.1A GB202014325D0 (en) | 2020-09-11 | 2020-09-11 | Security devices and methods of manufacture thereof |
| GBGB2014328.5A GB202014328D0 (en) | 2020-09-11 | 2020-09-11 | Security devices and methods of manufacture thereof |
| GB2014327.7A GB2600672A (en) | 2020-09-11 | 2020-09-11 | Security documents and methods of manufacture thereof |
| GBGB2014331.9A GB202014331D0 (en) | 2020-09-11 | 2020-09-11 | Security devices and methods of manufacture thereof |
| PCT/GB2021/052362 WO2022053827A2 (en) | 2020-09-11 | 2021-09-10 | Security devices and methods of manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX2023002813A true MX2023002813A (es) | 2023-03-16 |
Family
ID=77924443
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2023002814A MX2023002814A (es) | 2020-09-11 | 2021-09-10 | Dispositivos de seguridad y metodo de fabricacion de los mismos. |
| MX2023002812A MX2023002812A (es) | 2020-09-11 | 2021-09-10 | Dispositivos de seguridad y metodos de fabricacion de estos. |
| MX2023002813A MX2023002813A (es) | 2020-09-11 | 2021-09-10 | Dispositivos de seguridad y metodos de fabricacion de los mismos. |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2023002814A MX2023002814A (es) | 2020-09-11 | 2021-09-10 | Dispositivos de seguridad y metodo de fabricacion de los mismos. |
| MX2023002812A MX2023002812A (es) | 2020-09-11 | 2021-09-10 | Dispositivos de seguridad y metodos de fabricacion de estos. |
Country Status (9)
| Country | Link |
|---|---|
| US (3) | US12187064B2 (es) |
| EP (5) | EP4210966A2 (es) |
| CN (3) | CN116133871A (es) |
| AU (4) | AU2021341644A1 (es) |
| CA (4) | CA3192139A1 (es) |
| GB (6) | GB2601038B (es) |
| MX (3) | MX2023002814A (es) |
| WO (5) | WO2022053830A2 (es) |
| ZA (3) | ZA202301919B (es) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3972851B1 (en) | 2019-05-20 | 2024-02-28 | Crane & Co., Inc. | A security device including nanoparticles to tune index of refraction of layers of a polymeric matrix to optimize microoptic focus |
| DE102022000102A1 (de) * | 2022-01-12 | 2023-07-13 | Giesecke+Devrient Currency Technology Gmbh | Optisch variables Flächenmuster |
| EP4479253A1 (en) * | 2022-03-18 | 2024-12-25 | Authentix, Inc. | Devices, methods and a visual display involving metamaterial filters |
| KR102745885B1 (ko) * | 2022-05-04 | 2024-12-20 | 부산대학교 산학협력단 | 양자점을 이용한 진품감정방법 및 그 시스템 |
| CN120916902A (zh) * | 2023-03-10 | 2025-11-07 | 克瑞尼股份有限公司 | 嵌入透镜层的隐蔽机器可读微光学特征 |
| US12250354B1 (en) * | 2023-12-14 | 2025-03-11 | Xerox Corporation | Dual infrared gloss effect |
| CN118144457B (zh) * | 2024-03-25 | 2024-09-10 | 广东启悦未来科技股份有限公司 | 一种面料印刷渐变图案的工艺 |
| DE102024114397A1 (de) * | 2024-05-23 | 2025-11-27 | Giesecke+Devrient Currency Technology Gmbh | Taktile Strukturen auf Wertgegenständen |
| US20250360746A1 (en) * | 2024-05-23 | 2025-11-27 | Sejer Sejersen | Layered Structure and Method For Producing 3D Cards |
| SE547900C2 (en) * | 2024-11-07 | 2025-12-16 | Rolling Optics Innovation Ab | Synthetic image device and manufacturing method therefore |
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| DE3932505C2 (de) | 1989-09-28 | 2001-03-15 | Gao Ges Automation Org | Datenträger mit einem optisch variablen Element |
| DE4314380B4 (de) | 1993-05-01 | 2009-08-06 | Giesecke & Devrient Gmbh | Sicherheitspapier und Verfahren zu seiner Herstellung |
| GB9309673D0 (en) | 1993-05-11 | 1993-06-23 | De La Rue Holographics Ltd | Security device |
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| GB0209564D0 (en) | 2002-04-25 | 2002-06-05 | Rue De Int Ltd | Improvements in substrates |
| GB2388377B (en) | 2002-05-09 | 2004-07-28 | Rue De Int Ltd | A paper sheet incorporating a security element and a method of making the same |
| DE10248868A1 (de) | 2002-10-18 | 2004-07-08 | Giesecke & Devrient Gmbh | Wertdokument |
| GB0228303D0 (en) | 2002-12-04 | 2003-01-08 | Rue De Int Ltd | Security device and method |
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| EP2253478A3 (en) | 2003-11-21 | 2011-04-13 | Visual Physics, LLC | Micro-optic security and image presentation system |
| DE102005006277B4 (de) * | 2005-02-10 | 2007-09-20 | Ovd Kinegram Ag | Verfahren zur Herstellung eines Mehrschichtkörpers |
| DE102005028162A1 (de) * | 2005-02-18 | 2006-12-28 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| GB0601635D0 (en) * | 2006-01-26 | 2006-03-08 | Rue De Int Ltd | Security document |
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| DE102006050047A1 (de) * | 2006-10-24 | 2008-04-30 | Giesecke & Devrient Gmbh | Durchsichtssicherheitselement mit Mikrostrukturen |
| DE102007007914A1 (de) | 2007-02-14 | 2008-08-21 | Giesecke & Devrient Gmbh | Prägelack für mikrooptische Sicherheitselemente |
| DE102007062089A1 (de) | 2007-12-21 | 2009-07-02 | Giesecke & Devrient Gmbh | Verfahren zum Erzeugen einer Mikrostruktur |
| DE102008008685A1 (de) * | 2008-02-12 | 2009-08-13 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| JP5382322B2 (ja) * | 2009-04-07 | 2014-01-08 | 大日本印刷株式会社 | ホログラム転写箔 |
| FR2947209B1 (fr) | 2009-06-24 | 2011-07-22 | Oberthur Technologies | Document de securite a zones tactiles differenciees, et procede pour sa fabrication. |
| DE102009031387A1 (de) | 2009-07-01 | 2011-01-05 | Giesecke & Devrient Gmbh | Sicherheitselement und Herstellungsverfahren dafür |
| GB2486994B (en) | 2009-08-10 | 2017-03-22 | Innovia Security Pty Ltd | Optically variable devices and method of manufacture |
| GB0919109D0 (en) | 2009-10-30 | 2009-12-16 | Rue De Int Ltd | Security device |
| GB0919108D0 (en) | 2009-10-30 | 2009-12-16 | Rue De Int Ltd | Security device |
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| GB2480227A (en) | 2010-03-01 | 2011-11-16 | Rue De Int Ltd | Optical security device with spaced microlines |
| GB201003397D0 (en) | 2010-03-01 | 2010-04-14 | Rue De Int Ltd | Moire magnification security device |
| DE102010025775A1 (de) | 2010-07-01 | 2012-01-05 | Giesecke & Devrient Gmbh | Sicherheitselement sowie Wertdokument mit einem solchen Sicherheitselement |
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| EP2441593B1 (en) | 2010-10-13 | 2020-04-15 | Hueck Folien Gesellschaft m.b.H. | Security element with achromatic features |
| JP5747537B2 (ja) * | 2011-02-03 | 2015-07-15 | 凸版印刷株式会社 | 表示体及び印刷物 |
| DE102011108239A1 (de) * | 2011-07-21 | 2013-01-24 | Giesecke & Devrient Gmbh | Datenträger mit taktilem Sicherheitsmerkmal |
| DE102011117239A1 (de) * | 2011-10-28 | 2013-05-02 | Giesecke & Devrient Gmbh | Verfahren und Vorrichtung zur Untersuchung eines blatt- oder kartenförmigen Wertdokuments mit einem Sicherheitsmerkmal mit einen oder mehreren Hohlräume |
| EP2612763B2 (en) | 2012-01-09 | 2023-01-25 | Assa Abloy Ab | Identity document with secure image |
| DE102012008932A1 (de) * | 2012-05-04 | 2013-11-07 | Giesecke & Devrient Gmbh | Wertdokumente mit Schutzbeschichtung und Verfahren zu ihrer Herstellung |
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| JP6801239B2 (ja) * | 2016-06-08 | 2020-12-16 | 凸版印刷株式会社 | 表示体、および、物品 |
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| GB201612290D0 (en) | 2016-07-15 | 2016-08-31 | La Rue Int De Ltd | Methods of manufacturing a secuirty device |
| GB2557167B (en) * | 2016-09-30 | 2020-03-04 | De La Rue Int Ltd | Security devices |
| DE102017010060A1 (de) | 2016-12-09 | 2018-06-14 | Giesecke+Devrient Currency Technology Gmbh | Datenträger mit eingebettetem Sicherheitselement |
| GB2562699B (en) * | 2017-02-03 | 2020-07-22 | De La Rue Int Ltd | Method of forming a security device |
| GB2563187B (en) * | 2017-02-03 | 2020-07-22 | De La Rue Int Ltd | Method of forming a security sheet substrate |
| EP3366474B1 (en) | 2017-02-22 | 2020-06-24 | KBA-NotaSys SA | Printing press with in-line casting device for the replication and formation of a micro-optical structure |
| DE102017003603A1 (de) * | 2017-04-12 | 2018-10-18 | Giesecke+Devrient Currency Technology Gmbh | Sicherheitselement mit farbigem Merkmalsbereich |
| WO2018194178A1 (ja) * | 2017-04-21 | 2018-10-25 | 凸版印刷株式会社 | ホットスタンピング箔および積層光学装飾体付印刷体 |
| GB2562262B (en) | 2017-05-10 | 2019-12-11 | De La Rue Int Ltd | Security devices and methods for their manufacture |
| AU2018271144B2 (en) * | 2017-05-17 | 2023-05-25 | Ccl Secure Pty Ltd | A banknote |
| EP3424739A1 (en) * | 2017-07-05 | 2019-01-09 | The Procter & Gamble Company | Method of printing 3d-microoptic images on packaging systems |
| MX2020003642A (es) | 2017-09-29 | 2020-07-29 | Sicpa Holding Sa | Elemento de seguridad óptico fino y método de diseño del mismo. |
| US11292283B2 (en) | 2017-09-29 | 2022-04-05 | Sicpa Holding Sa | Optical security element |
| AU2018100185B4 (en) | 2018-02-09 | 2018-09-13 | Ccl Secure Pty Ltd | Optically variable device having tonal effect |
| GB2576218B (en) | 2018-08-10 | 2021-09-15 | De La Rue Int Ltd | Security devices and methods of authentication thereof |
| CN112789180B (zh) | 2018-10-05 | 2022-11-15 | 锡克拜控股有限公司 | 光学安全元件、标记对象、认证对象的方法、以及光学安全元件用于认证或防止伪造的用途 |
| US12214612B2 (en) | 2018-10-05 | 2025-02-04 | Sicpa Holding Sa | Method of designing a light-redirecting surface of a caustic layer, an optical security element comprising the designed light-redirecting surface of the caustic layer, a marked object, use and method of authenticating the object |
| AU2019426400B2 (en) | 2019-01-30 | 2025-01-02 | Koenig & Bauer Banknote Solutions Sa | Polymeric security articles |
| CN111619262B (zh) * | 2019-02-28 | 2021-05-11 | 中钞特种防伪科技有限公司 | 光学防伪元件及防伪产品 |
| GB2588625B (en) | 2019-10-29 | 2022-12-14 | De La Rue Int Ltd | Method of forming a security device |
| GB2594300A (en) | 2020-04-22 | 2021-10-27 | De La Rue Int Ltd | Security documents and methods of manufacture thereof |
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2021
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- 2021-09-10 US US18/026,060 patent/US20230364935A1/en active Pending
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2023
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