H04L 9/06
The encryption apparatus using shift registers or memories for block-wise or stream
Official title: the encryption apparatus using shift registers or memories for block-wise {or stream} coding, e.g. DES systems {or RC4; Hash functions; Pseudorandom sequence generators}
H04L9/06 (The encryption apparatus using shift registers or memories for block-wise or stream) appears on 13,663 US grants and 15,388 published applications in this corpus.
Search patents in H04L- Granted patents
- 13,663
- Published applications
- 15,388
- Assignees
- 3,786
- Inventors
- 20,656
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 18 | 0 |
| 1980 | 12 | 0 |
| 1981 | 11 | 0 |
| 1982 | 11 | 0 |
| 1983 | 9 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 11 | 0 |
| 1988 | 14 | 0 |
| 1989 | 21 | 0 |
| 1990 | 19 | 0 |
| 1991 | 26 | 0 |
| 1992 | 9 | 0 |
| 1993 | 29 | 0 |
| 1994 | 27 | 0 |
| 1995 | 28 | 0 |
| 1996 | 24 | 0 |
| 1997 | 42 | 0 |
| 1998 | 61 | 0 |
| 1999 | 31 | 0 |
| 2000 | 61 | 0 |
| 2001 | 55 | 28 |
| 2002 | 36 | 136 |
| 2003 | 32 | 121 |
| 2004 | 47 | 144 |
| 2005 | 58 | 152 |
| 2006 | 108 | 179 |
| 2007 | 106 | 191 |
| 2008 | 107 | 208 |
| 2009 | 122 | 197 |
| 2010 | 183 | 267 |
| 2011 | 187 | 182 |
| 2012 | 220 | 194 |
| 2013 | 251 | 181 |
| 2014 | 278 | 241 |
| 2015 | 249 | 314 |
| 2016 | 287 | 373 |
| 2017 | 366 | 608 |
| 2018 | 418 | 859 |
| 2019 | 753 | 1676 |
| 2020 | 1258 | 2640 |
| 2021 | 1752 | 2023 |
| 2022 | 1890 | 1323 |
| 2023 | 1604 | 1093 |
| 2024 | 1299 | 877 |
| 2025 | 1010 | 697 |
| 2026 | 488 | 484 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Obfuscating cryptographic material in memory6 Oct 2026US 12,754,854 B2Capital One Services, LLC
- Memory systems and devices including examples of generating access codes for memory regions using authentication logic6 Oct 2026US 12,755,060 B2Micron Technology, Inc.
- Anonymous data retrieval method, client and server6 Oct 2026US 12,756,537 B2Lenovo (Beijing) Limited
- Ciphertext nullification operations6 Oct 2026US 12,756,538 B2International Business Machines Corporation
- Apparatus and method for generating quantum circuit for ARIA substitution layer6 Oct 2026US 12,756,539 B2Electronics and Telecommunications Research Institute
- Systems and methods for multi-entity blockchain-based event break prevention8 Oct 2026US 2026/0311172 A1Citibank, N. A.
- Computer system for providing payments, incentives, and fraud protection within or across industries8 Oct 2026US 2026/0311209 A1Pay With Spire, Inc.
- Health data exchange platform8 Oct 2026US 2026/0311858 A1Youngblood IP Holdings, LLC
- Independent sequence processing to facilitate security between nodes in wireless networks8 Oct 2026US 2026/0312619 A1Texas Instruments Incorporated
- Ciphertext header-based data security8 Oct 2026US 2026/0312789 A1T-Mobile Innovations LLC
Most cited
By later US patents
- System for generation of user profiles for a system for customized electronic identification of desirable objects2,365US 5,754,939 A1998
- System and method for scheduling broadcast of and access to video programs and other data using customer profiles1,609US 5,758,257 A1998
- System for generation of object profiles for a system for customized electronic identification of desirable objects1,475US 5,835,087 A1998
- Rechargeable battery pack and operating system1,445US 7,941,865 B2Black & Decker Inc. · 2011
- Pseudonymous server for system for customized electronic identification of desirable objects1,258US 5,754,938 A1998