- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 9/28 - Arrangements for secret or secure communicationsNetwork security protocols using particular encryption algorithm
Patent holdings for IPC class H04L 9/28
Total number of patents in this class: 698
10-year publication summary
|
30
|
21
|
40
|
21
|
22
|
20
|
16
|
16
|
11
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Intel Corporation | 47106 |
39 |
| Malikie Innovations Limited | 6455 |
17 |
| NEC Corporation | 37004 |
13 |
| Nippon Telegraph and Telephone Corporation | 15924 |
12 |
| International Business Machines Corporation | 62634 |
11 |
| Research In Motion Limited | 1345 |
10 |
| Samsung Electronics Co., Ltd. | 157719 |
9 |
| Apple Inc. | 58742 |
8 |
| BlackBerry Limited | 4898 |
8 |
| Fujitsu Limited | 16874 |
8 |
| Huawei Technologies Co., Ltd. | 123385 |
8 |
| Microsoft Technology Licensing, LLC | 54466 |
8 |
| Google LLC | 44482 |
8 |
| Hewlett-Packard Development Company, L.P. | 25184 |
7 |
| Infineon Technologies AG | 8402 |
7 |
| Amazon Technologies, Inc. | 28087 |
7 |
| Sony Corporation | 30181 |
6 |
| Mitsubishi Electric Corporation | 48018 |
6 |
| Cryptography Research, Inc. | 322 |
6 |
| Agency for Science, Technology and Research | 3733 |
6 |
| Other owners | 494 |