H04L 2209/34
Encoding or coding
Official title: Encoding or coding, e.g. Huffman coding or error correction
H04L2209/34 (Encoding or coding) appears on 1,208 US grants and 1,238 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,208
- Published applications
- 1,238
- Assignees
- 556
- Inventors
- 2,163
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 20 | 0 |
| 1999 | 8 | 0 |
| 2000 | 15 | 0 |
| 2001 | 10 | 1 |
| 2002 | 2 | 22 |
| 2003 | 11 | 18 |
| 2004 | 6 | 22 |
| 2005 | 15 | 41 |
| 2006 | 18 | 33 |
| 2007 | 19 | 30 |
| 2008 | 23 | 36 |
| 2009 | 17 | 26 |
| 2010 | 35 | 39 |
| 2011 | 22 | 60 |
| 2012 | 26 | 35 |
| 2013 | 50 | 37 |
| 2014 | 56 | 62 |
| 2015 | 54 | 64 |
| 2016 | 50 | 69 |
| 2017 | 74 | 90 |
| 2018 | 81 | 74 |
| 2019 | 83 | 88 |
| 2020 | 81 | 73 |
| 2021 | 84 | 78 |
| 2022 | 80 | 62 |
| 2023 | 52 | 61 |
| 2024 | 71 | 45 |
| 2025 | 58 | 48 |
| 2026 | 23 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems for enhancing detection of fraudulent authentication data25 Aug 2026US 12,717,887 B2Daon Technology
- System for simplifying executable instructions for optimised verifiable computation18 Aug 2026US 12,712,885 B2
- Techniques and devices for configurable memory encryption and authentication11 Aug 2026US 12,705,186 B2Cryptography Research, Inc.
- System for recording verification keys on a blockchain11 Aug 2026US 12,706,920 B2nChain Licensing AG
- Methods and systems for enhancing detection of fraudulent authentication data28 Jul 2026US 12,695,590 B2Daon Technology
- System for recording verification keys on a blockchain1 Oct 2026US 2026/0303614 A1nChain Licensing AG
- Reception device, quantum cryptography system, information reconciliation method, and computer-readable medium13 Aug 2026US 2026/0238470 A1NEC Corporation
- Methods and systems for enhancing detection of fraudulent authentication data30 Jul 2026US 2026/0220242 A1Daon Technology
- Methods and systems for enhancing detection of fraudulent authentication data23 Jul 2026US 2026/0213916 A1Daon Technology
- Detection and survival method against adversarial attacks on automated systems9 Jul 2026US 2026/0197178 A1
Most cited
By later US patents
- Method and apparatus for embedding authentication information within digital data738US 5,646,997 A1997
- Optimization methods for the insertion, protection, and detection of digital watermarks in digitized data541US 5,889,868 ADice Corporation · 1999
- Method, apparatus, system and firmware for secure transactions480US 6,105,013 ADallas Semiconductor Corporation · 2000
- Public key/signature cryptosystem with enhanced digital signature certification447US 5,005,200 A1991
- Key protection device for smart cards345US 5,533,126 ABull CP8 · 1996