G09C 1/00
Apparatus or methods whereby a given sequence of signs
Official title: Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system (cryptographic typewriters G09C3/00)
G09C1/00 (Apparatus or methods whereby a given sequence of signs) appears on 2,136 US grants and 2,518 published applications in this corpus.
Search patents in G09C- Granted patents
- 2,136
- Published applications
- 2,518
- Assignees
- 765
- Inventors
- 3,608
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 10 |
| 2003 | 4 | 8 |
| 2004 | 5 | 11 |
| 2005 | 3 | 14 |
| 2006 | 9 | 20 |
| 2007 | 6 | 15 |
| 2008 | 13 | 23 |
| 2009 | 10 | 20 |
| 2010 | 27 | 37 |
| 2011 | 16 | 34 |
| 2012 | 19 | 28 |
| 2013 | 45 | 66 |
| 2014 | 56 | 104 |
| 2015 | 86 | 185 |
| 2016 | 131 | 227 |
| 2017 | 144 | 246 |
| 2018 | 184 | 263 |
| 2019 | 241 | 238 |
| 2020 | 230 | 208 |
| 2021 | 193 | 184 |
| 2022 | 207 | 172 |
| 2023 | 135 | 139 |
| 2024 | 157 | 135 |
| 2025 | 114 | 104 |
| 2026 | 59 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Technologies for trusted I/O with a channel identifier filter and processor-based cryptographic engine15 Sep 2026US 12,737,480 B2Intel Corporation
- Homomorphic cyclic operation system, homomorphic cyclic operation apparatus, homomorphic cyclic operation method, and homomorphic cyclic operation program1 Sep 2026US 12,726,328 B2NEC Corporation
- Secure computation apparatus, secure computation method, and program25 Aug 2026US 12,719,665 B2NTT, Inc.
- Systems and methods for threshold cryptography for cloud-based software-implemented hardware security modules18 Aug 2026US 12,712,728 B2Assa Abloy AB
- Methods and systems implemented in a network architecture with nodes capable of performing message-based transactions18 Aug 2026US 12,712,729 B2
- Hardware-entangled key generation27 Aug 2026US 2026/0254626 A1Telefonaktiebolaget LM Ericsson (publ)
- Table generation apparatus, table generation method and program20 Aug 2026US 2026/0245482 A1Nippon Telegraph and Telephone Corporation
- Data management system and information processing method using concealed data20 Aug 2026US 2026/0246619 A1Hitachi, Ltd.
- Device and a method for performing a cryptographic algorithm13 Aug 2026US 2026/0236565 A1
- Device for generating at least one cryptographic key, corresponding methods and computer program products13 Aug 2026US 2026/0238469 A1Nagravision Sarl
Most cited
By later US patents
- Intelligent automated assistant for TV user interactions537US 9,338,493 B2Apple Inc. · 2016
- Cryptographic co-processor323US 6,704,871 B1SafeNet, Inc. · 2004
- Rubbing encryption algorithm and security attack safe OTP token259US 8,799,668 B22014
- Method and system for secure peer-to-peer mobile communications257US 9,674,705 B22017
- System and method for configuring and registering a cryptographic device251US 5,970,147 AIntel Corporation · 1999