B42D 25/445
Using chemical means
Official title: using chemical means, e.g. etching
B42D25/445 (Using chemical means) appears on 88 US grants and 125 published applications in this corpus.
Search patents in B42D- Granted patents
- 88
- Published applications
- 125
- Assignees
- 56
- Inventors
- 217
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 4 |
| 2006 | 0 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 2 |
| 2010 | 3 | 3 |
| 2011 | 1 | 5 |
| 2012 | 1 | 4 |
| 2013 | 3 | 5 |
| 2014 | 3 | 5 |
| 2015 | 2 | 3 |
| 2016 | 6 | 7 |
| 2017 | 3 | 9 |
| 2018 | 8 | 22 |
| 2019 | 10 | 7 |
| 2020 | 8 | 3 |
| 2021 | 10 | 8 |
| 2022 | 1 | 9 |
| 2023 | 5 | 9 |
| 2024 | 7 | 6 |
| 2025 | 11 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for the generation and usage of authentication images in conjunction with low-resolution print devices16 Jun 2026US 12,659,414 B2Proof Authentication Corporation
- Laminate, card, method of manufacturing card, method of producing card, card information recording sheet and card including the same7 Oct 2025US 12,434,503 B2Toppan Inc.
- Optical anti-counterfeiting element and optical anti-counterfeiting product30 Sep 2025US 12,427,802 B2China Banknote Printing and Minting Corp.
- Optical anti-counterfeiting element and optical anti-counterfeiting product16 Sep 2025US 12,415,377 B2China Banknote Printing and Minting Corp.
- Method for producing effect pigments29 Jul 2025US 12,371,579 B2Giesecke+Devrient Currency Technology GmbH
- Method for transferring a security element onto a target substrate2 Jul 2026US 2026/0184100 A1Giesecke+Devrient Currency Technology GmbH
- Optical Anti-Counterfeiting Element, Optical Anti-Counterfeiting Product and Manufacturing Method7 May 2026US 2026/0124849 A1China Banknote Printing and Minting Corp.
- Laminate, card, method of manufacturing card, method of producing card, card information recording sheet and card including the same8 Jan 2026US 2026/0008292 A1Toppan Inc.
- Applying and Using Unique Unclonable Physical Identifiers17 Jul 2025US 2025/0229563 A1DUST Identity, Inc.
- Laminate, card, method of manufacturing card, method of producing card, card information recording sheet and card including the same17 Jul 2025US 2025/0229564 A1Toppan Inc.
Most cited
By later US patents
- Tape data carrier, method and device for manufacturing the same74US 6,328,342 B12001
- Optical authentication component and method of fabricating said component52US 9,134,468 B2Hologram Industries · 2015
- Identification card39US 4,592,976 A1986
- Security element and security document with one such security element25US 7,699,350 B2Giesecke & Devrient GmbH · 2010
- Plastic identity card capable of providing an inkless fingerprint and method of developing inkless prints on plastic card22US 4,705,299 AIdenticator Corporation · 1987