H04L 2209/68
Special signature format
Official title: Special signature format, e.g. XML format
H04L2209/68 (Special signature format) appears on 188 US grants and 228 published applications in this corpus.
Search patents in H04L- Granted patents
- 188
- Published applications
- 228
- Assignees
- 113
- Inventors
- 465
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 1 | 10 |
| 2003 | 1 | 5 |
| 2004 | 1 | 10 |
| 2005 | 1 | 23 |
| 2006 | 5 | 9 |
| 2007 | 2 | 24 |
| 2008 | 6 | 10 |
| 2009 | 12 | 8 |
| 2010 | 11 | 13 |
| 2011 | 16 | 9 |
| 2012 | 10 | 10 |
| 2013 | 8 | 8 |
| 2014 | 11 | 9 |
| 2015 | 13 | 12 |
| 2016 | 12 | 8 |
| 2017 | 11 | 6 |
| 2018 | 10 | 9 |
| 2019 | 11 | 10 |
| 2020 | 9 | 10 |
| 2021 | 12 | 4 |
| 2022 | 7 | 5 |
| 2023 | 4 | 8 |
| 2024 | 4 | 5 |
| 2025 | 7 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Values exclusions3 Mar 2026US 12,567,968 B2Hewlett-Packard Development Company, L. P.
- Lightweight network authentication for resource constrained devices via mergeable stateful signatures10 Feb 2026US 12,549,559 B2The Regents of the University of California
- Digital signature system16 Dec 2025US 12,499,276 B2
- Digital signature system9 Sep 2025US 12,411,993 B2
- Method and apparatus for two-step data signing1 Jul 2025US 12,348,620 B2ARRIS Enterprises LLC
- Enhancing Domain Keys Identified Mail (DKIM) Signatures20 Feb 2025US 2025/0062914 A1Google Inc.
- Certificate schemas for public key certificates21 Nov 2024US 2024/0388450 A1Hewlett-Packard Development Company, L. P.
- Improved methods & systems for signature verification in blockchain-implemented data applications23 May 2024US 2024/0171407 A1nChain Licensing AG
- Method and apparatus for two-step data signing2 May 2024US 2024/0146516 A1ARRIS Enterprises LLC
- Values exclusions21 Mar 2024US 2024/0097905 A1Hewlett-Packard Development Company, L. P.
Most cited
By later US patents
- Electronic mail system with functionality to include both private and public messages in a communication340US 7,730,142 B20733660 B.C. Ltd. · 2010
- Privacy management of personal data263US 7,398,393 B2Hewlett-Packard Development Company, L. P. · 2008
- System and method for document-driven processing of digitally-signed electronic documents222US 6,671,805 B1iLumin Corporation · 2003
- Secure data parser method and system160US 7,391,865 B2Security First Corp. · 2008
- System and method for federated security in an energy management system149US 7,127,328 B2Power Measurement Ltd. · 2006