G03G 21/043
By using an original which is not reproducible or only reproducible with
Official title: {by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background}
G03G21/043 (By using an original which is not reproducible or only reproducible with) appears on 187 US grants and 137 published applications in this corpus.
Search patents in G03G- Granted patents
- 187
- Published applications
- 137
- Assignees
- 80
- Inventors
- 348
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 1 |
| 2002 | 2 | 2 |
| 2003 | 3 | 7 |
| 2004 | 2 | 3 |
| 2005 | 2 | 11 |
| 2006 | 4 | 10 |
| 2007 | 5 | 20 |
| 2008 | 5 | 18 |
| 2009 | 9 | 20 |
| 2010 | 6 | 8 |
| 2011 | 21 | 7 |
| 2012 | 9 | 6 |
| 2013 | 9 | 4 |
| 2014 | 6 | 2 |
| 2015 | 4 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 4 | 2 |
| 2021 | 2 | 2 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 4 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical security device based on a surface of revolution19 May 2026US 12,632,002 B2Viavi Solutions Inc.
- Printing system, printing method, and computer-readable medium21 Oct 2025US 12,449,752 B2Ricoh Company, Ltd.
- Image forming apparatus, image forming method, and printed material29 Jul 2025US 12,372,897 B2Ricoh Company, Ltd.
- Optimizing a copy detection pattern to increase copy detecting performance1 Jul 2025US 12,348,692 B2Scantrust SA
- Optical security device based on a surface of revolution23 Jul 2024US 12,045,001 B2Viavi Solutions Inc.
- Producing Identity Markers by Electrostatic Printing20 Feb 2025US 2025/0060689 A1DUST Identity, Inc.
- Printing system, printing method, and computer-readable medium5 Dec 2024US 2024/0402639 A1Ricoh Company, Ltd.
- Optical security device based on a surface of revolution26 Sep 2024US 2024/0319654 A1Viavi Solutions Inc.
- Copy detection pattern20 Jun 2024US 2024/0205349 A1Scantrust SA
- Image forming apparatus, image forming method, and printed material23 May 2024US 2024/0168406 A1Ricoh Company, Ltd.
Most cited
By later US patents
- Security printed document to prevent unauthorized copying187US 5,830,609 AGraphic Arts Technical Foundation · 1998
- Method for the marking of documents140US 5,524,933 AEcole Polytechnique Federale de Lausanne · 1996
- Protected document and method of making same96US 4,310,180 ABurroughs Corporation · 1982
- Documents of value printed to prevent counterfeiting92US 4,066,280 AAmerican Bank Note Company · 1978
- Protected document bearing watermark and method of making92US 4,210,346 ABurroughs Corporation · 1980