H04N 2201/3281
Encryption
Official title: Encryption; Ciphering
H04N2201/3281 (Encryption) appears on 238 US grants and 245 published applications in this corpus.
Search patents in H04N- Granted patents
- 238
- Published applications
- 245
- Assignees
- 110
- Inventors
- 393
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 4 | 5 |
| 2002 | 6 | 22 |
| 2003 | 7 | 13 |
| 2004 | 9 | 15 |
| 2005 | 6 | 21 |
| 2006 | 14 | 15 |
| 2007 | 7 | 16 |
| 2008 | 10 | 13 |
| 2009 | 15 | 11 |
| 2010 | 15 | 20 |
| 2011 | 12 | 10 |
| 2012 | 15 | 10 |
| 2013 | 13 | 12 |
| 2014 | 13 | 7 |
| 2015 | 18 | 9 |
| 2016 | 3 | 6 |
| 2017 | 9 | 11 |
| 2018 | 10 | 10 |
| 2019 | 9 | 4 |
| 2020 | 3 | 1 |
| 2021 | 4 | 2 |
| 2022 | 0 | 3 |
| 2023 | 5 | 3 |
| 2024 | 3 | 3 |
| 2025 | 1 | 3 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus having ports to which USB device is attachable18 Aug 2026US 12,712,977 B2Brother Kogyo Kabushiki Kaisha
- Image capturing apparatus, image capturing system, and control method23 Jun 2026US 12,665,975 B2Canon Kabushiki Kaisha
- Communication system and image obtaining device configured to transmit image data and to transmit encryption key, nontransitory computer-readable recording medium storing computer readable instructions for image obtaining device, and controlling method for image obtaining device5 May 2026US 12,621,401 B2Brother Kogyo Kabushiki Kaisha
- Halftone screens encoding signatures21 Apr 2026US 12,610,019 B2Hewlett-Packard Development Company, L. P.
- Image processing device and image processing method14 Oct 2025US 12,443,730 B2Toshiba Tec Kabushiki Kaisha
- Image file creation method, image file, image file creation apparatus, and program10 Jul 2025US 2025/0227188 A1FUJIFILM Corporation
- Communication system, image obtaining device, non-transitory computer-readable recording medium storing computer-readable instructions for image obtaining device, and controlling method for image obtaining device19 Jun 2025US 2025/0203032 A1Brother Kogyo Kabushiki Kaisha
- Image capturing apparatus, image capturing system, and control method24 Apr 2025US 2025/0133176 A1Canon Kabushiki Kaisha
- Image forming apparatus having ports to which usb device is attachable17 Oct 2024US 2024/0348735 A1Brother Kogyo Kabushiki Kaisha
- Halftone screens encoding signatures25 Jul 2024US 2024/0251050 A1Hewlett-Packard Development Company, L. P.
Most cited
By later US patents
- Computer system linked by using information in data objects1,131US 6,122,403 ADigimarc Corporation · 2000
- Steganographic method and device844US 5,613,004 ADice Corporation · 1997
- Method and apparatus for embedding authentication information within digital data738US 5,646,997 A1997
- Steganographic method and device605US 5,687,236 ADice Corporation · 1997
- Digital authentication with analog documents394US 6,243,480 B12001