H04L 9/3221
Interactive zero-knowledge proofs
Official title: {interactive zero-knowledge proofs}
H04L9/3221 (Interactive zero-knowledge proofs) appears on 305 US grants and 392 published applications in this corpus.
Search patents in H04L- Granted patents
- 305
- Published applications
- 392
- Assignees
- 187
- Inventors
- 659
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 5 |
| 2005 | 0 | 3 |
| 2006 | 2 | 4 |
| 2007 | 3 | 2 |
| 2008 | 6 | 4 |
| 2009 | 4 | 3 |
| 2010 | 2 | 5 |
| 2011 | 3 | 6 |
| 2012 | 3 | 5 |
| 2013 | 8 | 6 |
| 2014 | 7 | 11 |
| 2015 | 5 | 7 |
| 2016 | 5 | 12 |
| 2017 | 16 | 18 |
| 2018 | 18 | 18 |
| 2019 | 13 | 24 |
| 2020 | 23 | 47 |
| 2021 | 28 | 38 |
| 2022 | 33 | 30 |
| 2023 | 27 | 27 |
| 2024 | 32 | 37 |
| 2025 | 27 | 38 |
| 2026 | 25 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Secure and zero knowledge data sharing for cloud applications29 Sep 2026US 12,750,228 B2Masimo Corporation
- Computer-implemented system and method for trustless zero-knowledge contingent payment15 Sep 2026US 12,737,753 B2nChain Licensing AG
- Privacy-preserving identity attribute verification using policy tokens15 Sep 2026US 12,739,121 B2Visa International Service Association
- Systems and methods for wrapped cryptographic proofs of electronic communications25 Aug 2026US 12,719,688 B1Aptos Foundation
- Systems and methods for selectively revealing verifiable private information on a blockchain18 Aug 2026US 12,712,753 B1Aptos Foundation
- Autonomous computing system for digital asset redemption state control and synchronization of distributed ledger records8 Oct 2026US 2026/0312810 A1
- Systems and methods for agent-controlled application workspaces with decision proof object-governed application action brokerage1 Oct 2026US 2026/0303360 A1MyAKH Inc
- Zero-knowledge proof generation method and apparatus, device, and storage medium17 Sep 2026US 2026/0280883 A1Huawei Cloud Computing Technologies Co., Ltd.
- Privacy Preserving Cognitive Surveillance and Distributed Threat Intelligence System3 Sep 2026US 2026/0260015 A1
- Devices, system and method for electronic cashless payment27 Aug 2026US 2026/0253065 A1Bundesdruckerei GmbH
Most cited
By later US patents
- Secure and zero knowledge data sharing for cloud applications503US 10,608,817 B2Masimo Corporation · 2020
- Method, apparatus and article for identification and signature329US 4,748,668 AYeda Research and Development Co. Ltd. · 1988
- Distributed key secret for rewritable blockchain181US 9,774,578 B1Accenture Global Solutions Limited · 2017
- Forensic communication apparatus and method172US 6,996,251 B2Myport Technologies, Inc. · 2006
- Method and apparatus for authenticating accreditations and for authenticating and signing messages160US 5,140,634 AU. S. Philips Corporation · 1992