H04L 9/0852
Quantum cryptography
Official title: {Quantum cryptography (transmission systems employing electromagnetic waves other than radio waves, e.g. light, infrared H04B10/00; wavelength-division multiplex systems H04J14/02; WDM arrangements H04J14/03)}
H04L9/0852 (Quantum cryptography) appears on 1,634 US grants and 2,065 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,634
- Published applications
- 2,065
- Assignees
- 613
- Inventors
- 2,745
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 7 |
| 2003 | 4 | 15 |
| 2004 | 9 | 31 |
| 2005 | 5 | 28 |
| 2006 | 11 | 40 |
| 2007 | 21 | 59 |
| 2008 | 32 | 37 |
| 2009 | 36 | 42 |
| 2010 | 41 | 37 |
| 2011 | 38 | 35 |
| 2012 | 44 | 33 |
| 2013 | 33 | 25 |
| 2014 | 39 | 36 |
| 2015 | 33 | 53 |
| 2016 | 45 | 58 |
| 2017 | 53 | 64 |
| 2018 | 54 | 78 |
| 2019 | 85 | 82 |
| 2020 | 91 | 108 |
| 2021 | 97 | 126 |
| 2022 | 159 | 150 |
| 2023 | 140 | 174 |
| 2024 | 172 | 233 |
| 2025 | 206 | 201 |
| 2026 | 166 | 311 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and method for generating quantum circuit for ARIA substitution layer6 Oct 2026US 12,756,539 B2Electronics and Telecommunications Research Institute
- Forward secrecy QSL6 Oct 2026US 12,756,544 B2QuSecure, Inc
- Multi-axis measurement protocol to protect quantum information6 Oct 2026US 12,756,545 B2Accenture Global Solutions Limited
- Quantum key distribution in an optical network and quantum-secured optical channels6 Oct 2026US 12,756,546 B2Ciena Corporation
- System and method for establishing a quantum resistant temporal encryption and data aging communications protocol6 Oct 2026US 12,756,554 B2Bank of America Corporation
- Communication method, communication system, server, and connected device8 Oct 2026US 2026/0312793 A1Panasonic Intellectual Property Management Co., Ltd.
- System and method for randomness extraction and method of performing quantum cryptography8 Oct 2026US 2026/0312794 A1National University of Singapore
- Nonlocally randomized quantum-augmented security8 Oct 2026US 2026/0312795 A1Qunnect, Inc.
- Method and system for error correction in quantum cryptography communication8 Oct 2026US 2026/0312796 A1Korea University Research and Business Foundation
- Method of Data Encryption with Recursive Semantic Fragmentation and MasterSeed Sealing8 Oct 2026US 2026/0312821 A1
Most cited
By later US patents
- System and method for communication using orbital angular momentum with multiple layer overlay modulation160US 9,077,577 B12015
- Interferometric quantum cryptographic key distribution system142US 5,307,410 AInternational Business Machines Corporation · 1994
- Quantum processor-based systems, methods and apparatus for solving problems as logic circuits135US 8,560,282 B2D-Wave Systems Inc. · 2013
- Quantum cryptography device and method131US 6,438,234 B1Swisscom AG · 2002
- Quantum key distribution using non-orthogonal macroscopic signals128US 5,515,438 AInternational Business Machines Corporation · 1996