H04L 9/0825
Using asymmetric-key encryption or public key infrastructure [pki]
Official title: {using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates}
H04L9/0825 (Using asymmetric-key encryption or public key infrastructure [pki]) appears on 4,970 US grants and 6,170 published applications in this corpus.
Search patents in H04L- Granted patents
- 4,970
- Published applications
- 6,170
- Assignees
- 1,762
- Inventors
- 10,335
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 15 | 0 |
| 1999 | 11 | 0 |
| 2000 | 16 | 0 |
| 2001 | 9 | 3 |
| 2002 | 11 | 22 |
| 2003 | 2 | 27 |
| 2004 | 7 | 25 |
| 2005 | 10 | 51 |
| 2006 | 15 | 51 |
| 2007 | 33 | 64 |
| 2008 | 35 | 62 |
| 2009 | 29 | 56 |
| 2010 | 43 | 49 |
| 2011 | 47 | 66 |
| 2012 | 61 | 82 |
| 2013 | 71 | 91 |
| 2014 | 115 | 133 |
| 2015 | 114 | 100 |
| 2016 | 127 | 134 |
| 2017 | 124 | 151 |
| 2018 | 135 | 234 |
| 2019 | 193 | 367 |
| 2020 | 317 | 565 |
| 2021 | 442 | 699 |
| 2022 | 602 | 750 |
| 2023 | 612 | 719 |
| 2024 | 669 | 623 |
| 2025 | 696 | 519 |
| 2026 | 397 | 527 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for region-specific sub-tokenization in cryptographic transaction processing6 Oct 2026US 12,754,690 B2Vannadium, Inc.
- Data encryption at a personal data sharing platform6 Oct 2026US 12,755,050 B2Tartle PBC
- Protection of a circuit design within a design container6 Oct 2026US 12,755,059 B2Xilinx, Inc.
- Selecting a contingent action token6 Oct 2026US 12,756,567 B22BC Innovations, LLC
- Data sharing method and electronic device6 Oct 2026US 12,756,577 B2Agricultural Genomics Institute At Shenzhen, Chinese Academy of Agricultural Sciences
- Transferring digital wallets8 Oct 2026US 2026/0311164 A1American Express Travel Related Services Company, Inc.
- Data migration using an orchestrator generated data migration transcript with trustee as a service8 Oct 2026US 2026/0312791 A1Dell Products L. P.
- Centralized authorization for secure shell access8 Oct 2026US 2026/0312792 A1CyberArk Software Ltd.
- Communication method, communication system, server, and connected device8 Oct 2026US 2026/0312793 A1Panasonic Intellectual Property Management Co., Ltd.
- Automatically Updating Cryptographic Keys Using a Learning Model8 Oct 2026US 2026/0312801 A1eBay Inc.
Most cited
By later US patents
- System for generation of user profiles for a system for customized electronic identification of desirable objects2,365US 5,754,939 A1998
- Electronic content delivery system1,734US 6,226,618 B1International Business Machines Corporation · 2001
- System and method for scheduling broadcast of and access to video programs and other data using customer profiles1,609US 5,758,257 A1998
- System for generation of object profiles for a system for customized electronic identification of desirable objects1,475US 5,835,087 A1998
- Secure online music distribution system1,448US 6,385,596 B1Liquid Audio, Inc. · 2002