H04L 9/3236
Using cryptographic hash functions
Official title: {using cryptographic hash functions}
H04L9/3236 (Using cryptographic hash functions) appears on 15,350 US grants and 19,123 published applications in this corpus.
Search patents in H04L- Granted patents
- 15,350
- Published applications
- 19,123
- Assignees
- 4,271
- Inventors
- 24,575
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 18 | 0 |
| 1999 | 13 | 0 |
| 2000 | 26 | 0 |
| 2001 | 16 | 12 |
| 2002 | 9 | 51 |
| 2003 | 9 | 53 |
| 2004 | 22 | 80 |
| 2005 | 33 | 119 |
| 2006 | 53 | 134 |
| 2007 | 73 | 156 |
| 2008 | 71 | 172 |
| 2009 | 76 | 194 |
| 2010 | 135 | 202 |
| 2011 | 152 | 175 |
| 2012 | 186 | 174 |
| 2013 | 224 | 155 |
| 2014 | 252 | 202 |
| 2015 | 223 | 288 |
| 2016 | 274 | 400 |
| 2017 | 307 | 613 |
| 2018 | 415 | 922 |
| 2019 | 821 | 1999 |
| 2020 | 1436 | 3221 |
| 2021 | 2014 | 2901 |
| 2022 | 2330 | 1953 |
| 2023 | 1961 | 1468 |
| 2024 | 1855 | 1505 |
| 2025 | 1496 | 1149 |
| 2026 | 792 | 825 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cloud-based keyless entry system6 Oct 2026US 12,752,736 B2Red Hat, Inc.
- Systems and methods for region-specific sub-tokenization in cryptographic transaction processing6 Oct 2026US 12,754,690 B2Vannadium, Inc.
- Self-defending computing device6 Oct 2026US 12,755,009 B2Bank of America Corporation
- Blockchain-based anonymous trusted voting method, apparatus and related device6 Oct 2026US 12,755,028 B2Guizhou Power Grid Company Limited
- Apparatus and method for encrypting files for application-level data protection in secure enclaves6 Oct 2026US 12,755,030 B1Anjuna Security, Inc.
- System and Method for Architectural Integrity Assurance in Neural Networks8 Oct 2026US 2026/0312804 A1
- Parallel Tokenization of Floating Point Information in a Distributed Network Environment8 Oct 2026US 2026/0312811 A1Protegrity US Holding, LLC
- Systems and Methods for Creating a Verified Web Using Blockchain Domains, AI Agents and Verified Resolutions Using Metadata and Proofs8 Oct 2026US 2026/0312813 A1
- Method for generating a code, method for verifying a code, document comprising the code, and use of the code8 Oct 2026US 2026/0312816 A1Kurz Digital Solutions GmbH & Co. KG
- Intelligent caching of structured document analyses8 Oct 2026US 2026/0312818 A1Cisco Technology, Inc.
Most cited
By later US patents
- Electronic document verification system and method765US 5,606,609 AScientific-Atlanta, Inc. · 1997
- Method of authenticating game data sets in an electronic casino gaming system747US 6,149,522 ASilicon Gaming - Nevada · 2000
- Electronic casino gaming apparatus with improved play capacity, authentication and security744US 5,643,086 ASilicon Gaming, Inc. · 1997
- Method and apparatus for purchasing and delivering digital goods over a network652US 5,809,144 ACarnegie Mellon University · 1998
- Automatic access of electronic information through secure machine-readable codes on printed documents644US 5,933,829 ANeoMedia Technologies, Inc. · 1999