- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 9/28 - Arrangements for secret or secure communications; Network security protocols using particular encryption algorithm
Patent holdings for IPC class H04L 9/28
Total number of patents in this class: 817
10-year publication summary
|
75
|
59
|
30
|
21
|
40
|
21
|
22
|
19
|
12
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Intel Corporation | 45621 |
40 |
| Research In Motion Limited | 2283 |
30 |
| Malikie Innovations Limited | 7703 |
19 |
| BlackBerry Limited | 5958 |
17 |
| NEC Corporation | 32703 |
14 |
| International Business Machines Corporation | 60644 |
13 |
| Samsung Electronics Co., Ltd. | 131630 |
12 |
| Certicom Corp. | 96 |
12 |
| Fujitsu Limited | 19265 |
11 |
| Microsoft Technology Licensing, LLC | 51439 |
11 |
| Nippon Telegraph and Telephone Corporation | 14195 |
11 |
| Apple Inc. | 50209 |
9 |
| Google LLC | 38759 |
9 |
| Hewlett-Packard Development Company, L.P. | 28538 |
8 |
| Sony Corporation | 32931 |
7 |
| Texas Instruments Incorporated | 19376 |
7 |
| Infineon Technologies AG | 8189 |
7 |
| Huawei Technologies Co., Ltd. | 100781 |
7 |
| Amazon Technologies, Inc. | 24422 |
7 |
| Nortel Networks Limited | 404 |
7 |
| Other owners | 559 |