H04N 2201/3233
Of authentication information
Official title: of authentication information, e.g. digital signature, watermark
H04N2201/3233 (Of authentication information) appears on 1,507 US grants and 1,479 published applications in this corpus.
Search patents in H04N- Granted patents
- 1,507
- Published applications
- 1,479
- Assignees
- 384
- Inventors
- 1,838
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 15 | 0 |
| 1998 | 21 | 0 |
| 1999 | 30 | 0 |
| 2000 | 32 | 0 |
| 2001 | 42 | 39 |
| 2002 | 45 | 121 |
| 2003 | 74 | 123 |
| 2004 | 81 | 95 |
| 2005 | 47 | 133 |
| 2006 | 102 | 108 |
| 2007 | 87 | 114 |
| 2008 | 68 | 117 |
| 2009 | 102 | 101 |
| 2010 | 103 | 101 |
| 2011 | 95 | 69 |
| 2012 | 121 | 39 |
| 2013 | 62 | 30 |
| 2014 | 64 | 34 |
| 2015 | 45 | 50 |
| 2016 | 39 | 41 |
| 2017 | 51 | 44 |
| 2018 | 33 | 32 |
| 2019 | 30 | 16 |
| 2020 | 23 | 17 |
| 2021 | 18 | 16 |
| 2022 | 14 | 10 |
| 2023 | 18 | 14 |
| 2024 | 12 | 5 |
| 2025 | 9 | 7 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 2201/3235Checking or certification of the authentication informationIndexing code345
- H04N 2201/3236Details of authentication information generationIndexing code321
- H04N 2201/3239Using a plurality of different authentication informationIndexing code141
- H04N 2201/324Selecting a particular authentication information from amongst a plurality of different authenticationIndexing code51
Recent patents
- Halftone screens encoding signatures21 Apr 2026US 12,610,019 B2Hewlett-Packard Development Company, L. P.
- Verification system, verification method, and verification program of id card3 Feb 2026US 12,541,995 B2FUJIFILM Corporation
- Verification system, verification method, and verification program of id card16 Dec 2025US 12,499,706 B2FUJIFILM Corporation
- Method for building a blockchain21 Oct 2025US 12,450,603 B2BASF SE
- Coding of boundary UV2XYZ index for mesh compression30 Sep 2025US 12,430,805 B2Tencent America LLC
- Image processor, image reading device, image forming apparatus, medical information management system, image processing method, and non-transitory recording medium26 Mar 2026US 2026/0089283 A1Ricoh Company, Ltd.
- Verification system, verification method, and verification program of id card5 Mar 2026US 2026/0064821 A1FUJIFILM Corporation
- Method for building a blockchain15 Jan 2026US 2026/0017653 A1BASF SE
- Authenticity collation system and authenticity collation method25 Dec 2025US 2025/0392673 A1FUJIFILM Corporation
- Imaging apparatus, information processing method, and storage medium4 Dec 2025US 2025/0373928 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Methods for surveying dissemination of proprietary empirical data1,132US 5,862,260 ADigimarc Corporation · 1999
- Computer system linked by using information in data objects1,131US 6,122,403 ADigimarc Corporation · 2000
- Linking of computers based on optical sensing of digital data942US 6,311,214 B1Digimarc Corporation · 2001
- Watermark embedder and reader942US 6,614,914 B1Digimarc Corporation · 2003
- Connected audio and other media objects859US 6,505,160 B1Digimarc Corporation · 2003