H04L 9/3218
Using proof of knowledge
Official title: {using proof of knowledge, e.g. Fiat-Shamir, GQ, Schnorr, ornon-interactive zero-knowledge proofs}
H04L9/3218 (Using proof of knowledge) appears on 1,342 US grants and 1,744 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,342
- Published applications
- 1,744
- Assignees
- 606
- Inventors
- 2,414
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 10 | 5 |
| 2002 | 5 | 16 |
| 2003 | 5 | 17 |
| 2004 | 5 | 22 |
| 2005 | 9 | 21 |
| 2006 | 19 | 29 |
| 2007 | 15 | 23 |
| 2008 | 24 | 22 |
| 2009 | 13 | 34 |
| 2010 | 20 | 32 |
| 2011 | 19 | 37 |
| 2012 | 29 | 34 |
| 2013 | 36 | 18 |
| 2014 | 30 | 36 |
| 2015 | 35 | 23 |
| 2016 | 17 | 24 |
| 2017 | 36 | 49 |
| 2018 | 31 | 54 |
| 2019 | 52 | 84 |
| 2020 | 69 | 179 |
| 2021 | 113 | 181 |
| 2022 | 163 | 151 |
| 2023 | 141 | 161 |
| 2024 | 153 | 170 |
| 2025 | 136 | 151 |
| 2026 | 118 | 171 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-bypassable age-token gating across integration surfaces with verifiable age-compliance receipts6 Oct 2026US 12,756,568 B1The Crown and the Cross LLC
- System and method for cryptographic continuity assertions6 Oct 2026US 12,756,570 B1
- Blockchain-based escrowed marketplace29 Sep 2026US 12,749,058 B2Fujitsu Limited
- Apparatus for providing monitoring service of neural consensus-based blockchain network system to manage safety quality and distribution history, and operation method thereof29 Sep 2026US 12,750,227 B2Leadpoint System Inc.
- Secure and zero knowledge data sharing for cloud applications29 Sep 2026US 12,750,228 B2Masimo Corporation
- Computing technologies for privacy-preserving service of data based on zero-knowledge proofs8 Oct 2026US 2026/0310822 A1Datasent, Inc.
- Privacy protection system and method, medium, and device8 Oct 2026US 2026/0312788 A1Advanced Nova Technologies (Singapore) Holding Pte. Ltd.
- Autonomous computing system for digital asset redemption state control and synchronization of distributed ledger records8 Oct 2026US 2026/0312810 A1
- Articles and methods for automated parallelization of zero knowledge protocols8 Oct 2026US 2026/0312812 A1Northwestern University
- Systems and Methods for Creating a Verified Web Using Blockchain Domains, AI Agents and Verified Resolutions Using Metadata and Proofs8 Oct 2026US 2026/0312813 A1
Most cited
By later US patents
- Systems and methods for secure transaction management and electronic rights protection1,270US 5,982,891 AIntertrust Technologies Corporation · 1999
- Systems and methods for secure transaction management and electronic rights protection1,156US 5,910,987 AIntertrust Technologies Corporation · 1999
- Trusted and secure techniques, systems and methods for item delivery and execution944US 6,185,683 B2Intertrust Technologies Corporation · 2001
- Systems and methods for the secure transaction management and electronic rights protection933US 6,253,193 B1Intertrust Technologies Corporation · 2001
- Systems and methods for secure transaction management and electronic rights protection868US 6,363,488 B1Intertrust Technologies Corporation · 2002