- 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: 2262
10-year publication summary
|
168
|
224
|
243
|
261
|
250
|
166
|
144
|
136
|
95
|
32
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 14195 |
251 |
| NEC Corporation | 32703 |
208 |
| Mitsubishi Electric Corporation | 43934 |
115 |
| Sony Corporation | 32931 |
85 |
| Intel Corporation | 45621 |
76 |
| Hitachi, Ltd. | 16452 |
50 |
| Fujitsu Limited | 19265 |
34 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
32 |
| International Business Machines Corporation | 60644 |
31 |
| Panasonic Corporation | 20786 |
30 |
| ICTK Holdings Co., Ltd. | 51 |
27 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
26 |
| Qualcomm Incorporated | 76576 |
21 |
| Microsoft Technology Licensing, LLC | 51439 |
16 |
| KDDI Corporation | 764 |
16 |
| Secure-ic SAS | 75 |
15 |
| Cryptography Research, Inc. | 282 |
14 |
| Apple Inc. | 50209 |
13 |
| Analog Devices, Inc. | 3475 |
12 |
| Enveil, Inc. | 35 |
12 |
| Other owners | 1178 |