- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 9/30 - Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy
Patent holdings for IPC class H04L 9/30
Total number of patents in this class: 6842
10-year publication summary
|
368
|
610
|
666
|
846
|
943
|
895
|
766
|
727
|
674
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nchain Licensing AG | 788 |
189 |
| International Business Machines Corporation | 60067 |
181 |
| Visa International Service Association | 4446 |
129 |
| Microsoft Technology Licensing, LLC | 52895 |
121 |
| Advanced New Technologies Co., Ltd. | 2591 |
110 |
| Intel Corporation | 46091 |
107 |
| Amazon Technologies, Inc. | 25791 |
98 |
| BlackBerry Limited | 5880 |
94 |
| Samsung Electronics Co., Ltd. | 138320 |
93 |
| Apple Inc. | 52547 |
93 |
| Malikie Innovations Limited | 7393 |
91 |
| MasterCard International Incorporated | 4952 |
80 |
| Cisco Technology, Inc. | 19303 |
73 |
| Huawei Technologies Co., Ltd. | 106382 |
69 |
| Google LLC | 40708 |
68 |
| Nippon Telegraph and Telephone Corporation | 16200 |
65 |
| Koninklijke Philips N.V. | 23916 |
59 |
| Mitsubishi Electric Corporation | 44678 |
58 |
| Wells Fargo Bank, National Association | 3479 |
58 |
| NEC Corporation | 34296 |
53 |
| Other owners | 4953 |