- All sections
- G - Physics
- G09C - Ciphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy
- G09C 1/00 - 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
Patent holdings for IPC class G09C 1/00
Total number of patents in this class: 2257
10-year publication summary
|
223
|
240
|
256
|
248
|
165
|
142
|
136
|
96
|
88
|
35
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 17381 |
263 |
| NEC Corporation | 36003 |
207 |
| Mitsubishi Electric Corporation | 46449 |
118 |
| Intel Corporation | 47129 |
74 |
| Sony Corporation | 30929 |
73 |
| Hitachi, Ltd. | 15572 |
51 |
| International Business Machines Corporation | 61471 |
31 |
| Panasonic Corporation | 20042 |
30 |
| Fujitsu Limited | 18388 |
30 |
| ICTK Holdings Co., Ltd. | 51 |
27 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6272 |
25 |
| Qualcomm Incorporated | 86553 |
19 |
| KDDI Corporation | 1018 |
19 |
| Apple Inc. | 55446 |
16 |
| Microsoft Technology Licensing, LLC | 53910 |
16 |
| Cryptography Research, Inc. | 312 |
15 |
| Secure-ic SAS | 82 |
15 |
| Analog Devices, Inc. | 3367 |
13 |
| Enveil, Inc. | 41 |
12 |
| Samsung Electronics Co., Ltd. | 147622 |
11 |
| Other owners | 1192 |