H04L 9/3257
Using blind signatures
Official title: {using blind signatures}
H04L9/3257 (Using blind signatures) appears on 167 US grants and 178 published applications in this corpus.
Search patents in H04L- Granted patents
- 167
- Published applications
- 178
- Assignees
- 93
- Inventors
- 332
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 3 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 3 | 7 |
| 2006 | 5 | 3 |
| 2007 | 2 | 3 |
| 2008 | 1 | 5 |
| 2009 | 5 | 8 |
| 2010 | 4 | 5 |
| 2011 | 4 | 4 |
| 2012 | 3 | 5 |
| 2013 | 6 | 2 |
| 2014 | 4 | 2 |
| 2015 | 4 | 3 |
| 2016 | 1 | 2 |
| 2017 | 3 | 5 |
| 2018 | 4 | 10 |
| 2019 | 5 | 7 |
| 2020 | 8 | 13 |
| 2021 | 14 | 11 |
| 2022 | 7 | 22 |
| 2023 | 12 | 17 |
| 2024 | 16 | 19 |
| 2025 | 16 | 15 |
| 2026 | 8 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for establishing data provenance by generating one-time signatures18 Aug 2026US 12,712,740 B2Citigroup Technology, Inc.
- Verifying device and application integrity11 Aug 2026US 12,705,331 B2Google Inc.
- Anonymous event attestation14 Jul 2026US 12,683,806 B2Google Inc.
- Digital signatures21 Apr 2026US 12,609,838 B2nChain Licensing AG
- Secure digital signature schemes14 Apr 2026US 12,603,786 B2International Business Machines Corporation
- Anonymous event attestation1 Oct 2026US 2026/0303367 A1Google Inc.
- Digital signatures6 Aug 2026US 2026/0230330 A1nChain Licensing AG
- Digital signatures25 Jun 2026US 2026/0180811 A1nChain Licensing AG
- Secure digital signature schemes1 Jan 2026US 2026/0005870 A1International Business Machines Corporation
- Information processing system, information processing method, server, block chain node, and program25 Dec 2025US 2025/0392484 A1Chaintope Inc.
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
- Card-computer moderated systems377US 4,926,480 A1990
- Method and apparatus for implementing electronic cash368US 4,977,595 ANippon Telegraph and Telephone Corporation · 1990
- Blind unanticipated signature systems277US 4,759,064 A1988