H04L 9/0841
Involving diffie-hellman or related key agreement protocols
Official title: {involving Diffie-Hellman or related key agreement protocols}
H04L9/0841 (Involving diffie-hellman or related key agreement protocols) appears on 2,565 US grants and 2,768 published applications in this corpus.
Search patents in H04L- Granted patents
- 2,565
- Published applications
- 2,768
- Assignees
- 860
- Inventors
- 4,478
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 13 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 17 | 0 |
| 2000 | 12 | 0 |
| 2001 | 20 | 9 |
| 2002 | 8 | 30 |
| 2003 | 7 | 48 |
| 2004 | 14 | 27 |
| 2005 | 20 | 73 |
| 2006 | 42 | 97 |
| 2007 | 28 | 101 |
| 2008 | 39 | 85 |
| 2009 | 48 | 101 |
| 2010 | 64 | 104 |
| 2011 | 82 | 95 |
| 2012 | 108 | 90 |
| 2013 | 127 | 70 |
| 2014 | 136 | 85 |
| 2015 | 104 | 82 |
| 2016 | 84 | 97 |
| 2017 | 119 | 145 |
| 2018 | 115 | 149 |
| 2019 | 138 | 181 |
| 2020 | 159 | 191 |
| 2021 | 189 | 193 |
| 2022 | 197 | 192 |
| 2023 | 213 | 195 |
| 2024 | 187 | 151 |
| 2025 | 155 | 102 |
| 2026 | 62 | 75 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Secure communication for commissioning and decommissioning circuit breakers and panel system29 Sep 2026US 12,750,674 B2Leviton Manufacturing Co., Inc.
- Secure key exchange using key-associated attributes1 Sep 2026US 12,726,336 B2Microsoft Technology Licensing, LLC
- 5G key generation / ECC key generation and SUCI calculation25 Aug 2026US 12,719,669 B2Giesecke+Devrient Mobile Security Germany GmbH
- Subscription concealed identifier (SUCI) supporting post-quantum cryptography25 Aug 2026US 12,719,677 B2Adeia Emerging Technologies Inc.
- Statistically private oblivious transfer from CDH25 Aug 2026US 12,719,838 B2Visa International Service Association
- Secure connection of virtual machine to hardware security module1 Oct 2026US 2026/0303337 A1International Business Machines Corporation
- Cross-node data transmission method and related apparatus1 Oct 2026US 2026/0303377 A1
- Key reuse in a cloud environment24 Sep 2026US 2026/0291717 A1Oracle International Corporation
- Verification of Data of an Authentication and Key-Agreement Protocol Process10 Sep 2026US 2026/0270088 A1Siemens Aktiengesellschaft
- Secure networked respiratory therapy systems3 Sep 2026US 2026/0257029 A1ResMed Limited
Most cited
By later US patents
- System and method for secure three-party communications1,364US 8,316,237 B12012
- Cryptographic apparatus and method1,047US 4,200,770 AStanford University · 1980
- Methods and entities using IPSec ESP to support security functionality for UDP-based traffic1,019US 8,639,936 B2Alcatel Lucent · 2014
- System and method for secure three-party communications882US 7,181,017 B12007
- Client/server protocol for proving authenticity655US 6,085,320 ARSA Security Inc. · 2000