B42D 25/21
For multiple purposes
Official title: for multiple purposes
B42D25/21 (For multiple purposes) appears on 303 US grants and 354 published applications in this corpus.
Search patents in B42D- Granted patents
- 303
- Published applications
- 354
- Assignees
- 204
- Inventors
- 658
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 6 |
| 2003 | 5 | 10 |
| 2004 | 1 | 9 |
| 2005 | 4 | 11 |
| 2006 | 4 | 10 |
| 2007 | 11 | 12 |
| 2008 | 4 | 15 |
| 2009 | 8 | 13 |
| 2010 | 5 | 23 |
| 2011 | 8 | 17 |
| 2012 | 4 | 28 |
| 2013 | 12 | 23 |
| 2014 | 15 | 24 |
| 2015 | 26 | 15 |
| 2016 | 10 | 5 |
| 2017 | 16 | 33 |
| 2018 | 26 | 19 |
| 2019 | 18 | 16 |
| 2020 | 20 | 25 |
| 2021 | 12 | 11 |
| 2022 | 11 | 8 |
| 2023 | 7 | 11 |
| 2024 | 9 | 6 |
| 2025 | 7 | 1 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical structure having a relief effect30 Jun 2026US 12,668,076 B2Oberthur Fiduciaire SAS
- Method and apparatus for heat resistant coatings28 Apr 2026US 12,611,885 B2Hazen Paper Company
- Optical switch devices31 Mar 2026US 12,589,611 B2Hueck Folien Gesellschaft m.b.H.
- Water-resistant sealing layer for sealing microcells of electro-optic devices2 Dec 2025US 12,487,498 B2E Ink Corporation
- Optical products, masters for fabricating optical products, and methods for manufacturing masters and optical products26 Aug 2025US 12,397,576 B2Wavefront Technology, Inc.
- Phosphor-based pen for authentication and security10 Sep 2026US 2026/0264442 A1Intelligent Material Solutions, Inc.
- Covert machine-readable micro-optic feature embedded in lens layer13 Aug 2026US 2026/0233550 A1Crane Co.
- Optical security components visible in transmission, manufacture of such components and secure objects equipped with such components30 Apr 2026US 2026/0116114 A1Surys
- Security element with an optical effect layer formed as a thin layer8 May 2025US 2025/0144954 A1Hueck Folien Gesellschaft m.b.H.
- Optical switch devices7 Nov 2024US 2024/0371226 A1Wavefront Technology, Inc.
Most cited
By later US patents
- Connected audio and other media objects859US 6,505,160 B1Digimarc Corporation · 2003
- Watermark enabled video objects735US 6,411,725 B1Digimarc Corporation · 2002
- Transaction card262US 6,581,839 B1American Express Travel Related Services Company, Inc. · 2003
- Printing and validation of self validating security documents227US 6,389,151 B1Digimarc Corporation · 2002
- Watermark encoded video, and related methods207US 7,050,603 B2Digimarc Corporation · 2006