H04N 1/4493
Subsequently rendering the image intelligible using a co-operating image, mask or the
Official title: {Subsequently rendering the image intelligible using a co-operating image, mask or the like}
H04N1/4493 (Subsequently rendering the image intelligible using a co-operating image, mask or the) appears on 65 US grants and 90 published applications in this corpus.
Search patents in H04N- Granted patents
- 65
- Published applications
- 90
- Assignees
- 52
- Inventors
- 183
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 3 |
| 2006 | 0 | 3 |
| 2007 | 0 | 6 |
| 2008 | 1 | 7 |
| 2009 | 1 | 1 |
| 2010 | 3 | 2 |
| 2011 | 5 | 4 |
| 2012 | 3 | 1 |
| 2013 | 3 | 2 |
| 2014 | 2 | 1 |
| 2015 | 2 | 2 |
| 2016 | 0 | 14 |
| 2017 | 5 | 8 |
| 2018 | 10 | 4 |
| 2019 | 7 | 4 |
| 2020 | 3 | 6 |
| 2021 | 3 | 5 |
| 2022 | 4 | 4 |
| 2023 | 3 | 2 |
| 2024 | 1 | 2 |
| 2025 | 0 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Digital anti-counterfeiting software method and apparatus167US 5,708,717 A1998
- Method and apparatus of encryption of optical images137US 4,776,013 ARotlex Optics Ltd. · 1988
- Data handling and archiving system97US 4,728,984 AXerox Corporation · 1988
- Security facsimile systems69US 4,912,761 A1990
- Thermally-activated receiving medium for use in a facsimile transmission system27US 5,001,749 A1991