H04L 9/302
Involving the integer factorization problem
Official title: {involving the integer factorization problem, e.g. RSA or quadratic sieve [QS] schemes}
H04L9/302 (Involving the integer factorization problem) appears on 710 US grants and 676 published applications in this corpus.
Search patents in H04L- Granted patents
- 710
- Published applications
- 676
- Assignees
- 347
- Inventors
- 1,278
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 10 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 12 | 0 |
| 1997 | 3 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 8 | 0 |
| 2001 | 9 | 4 |
| 2002 | 13 | 19 |
| 2003 | 4 | 10 |
| 2004 | 7 | 27 |
| 2005 | 12 | 28 |
| 2006 | 19 | 18 |
| 2007 | 19 | 29 |
| 2008 | 20 | 35 |
| 2009 | 13 | 31 |
| 2010 | 25 | 30 |
| 2011 | 27 | 23 |
| 2012 | 32 | 14 |
| 2013 | 28 | 15 |
| 2014 | 23 | 13 |
| 2015 | 15 | 22 |
| 2016 | 22 | 42 |
| 2017 | 24 | 41 |
| 2018 | 25 | 34 |
| 2019 | 51 | 55 |
| 2020 | 43 | 45 |
| 2021 | 49 | 36 |
| 2022 | 41 | 34 |
| 2023 | 32 | 25 |
| 2024 | 34 | 22 |
| 2025 | 19 | 15 |
| 2026 | 16 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for confirmation of life status and related file storage and release protocol8 Sep 2026US 12,732,364 B1
- Systems and methods for post-quantum cryptography optimization11 Aug 2026US 12,706,753 B2Wells Fargo Bank, N. A.
- Systems and methods for incident reporting from secured devices4 Aug 2026US 12,701,057 B2VeriFone, Inc.
- Data communication system, center device, master device, storage medium storing encryption program, and storage medium storing decryption program28 Jul 2026US 12,695,613 B2Denso Corporation
- Computer-implemented method for protecting sensitive data in a transaction based on a smart contract deployed in a blockchain23 Jun 2026US 12,664,581 B2Imam Abdulrahman Bin Faisal University
- Block chain method for improved data confidentiality10 Sep 2026US 2026/0268394 A1Imam Abdulrahman Bin Faisal University
- Asymmetric Key Generation Process Optimization Using a Multi-Stage Approach23 Jul 2026US 2026/0213940 A1DigiCert, Inc.
- Method, apparatus, and system for post-quantum electronic signature based on infinite hash function2 Jul 2026US 2026/0189404 A1Industry-Academic Cooperation Foundation, Dankook University
- Method for encrypted communication between computer systems, and a vehicle21 May 2026US 2026/0142951 A1Mercedes-Benz Group AG
- Data encryption for multi-cloud security9 Apr 2026US 2026/0100834 A1Microsoft Technology Licensing, LLC
Most cited
By later US patents
- Method and apparatus for the secure distributed storage and retrieval of information1,561US 5,991,414 AInternational Business Machines Corporation · 1999
- Method and apparatus for the secure distributed storage and retrieval of information1,551US 6,192,472 B1International Business Machines Corporation · 2001
- Cryptographic communications system and method1,449US 4,405,829 AMassachusetts Institute of Technology · 1983
- System and method for secure three-party communications1,364US 8,316,237 B12012
- System and method for secure three-party communications882US 7,181,017 B12007