- 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: 7101
10-year publication summary
|
368
|
611
|
667
|
845
|
946
|
898
|
771
|
735
|
688
|
301
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nchain Licensing AG | 875 |
219 |
| International Business Machines Corporation | 61210 |
182 |
| Visa International Service Association | 4548 |
134 |
| Microsoft Technology Licensing, LLC | 53693 |
127 |
| Intel Corporation | 46962 |
110 |
| Apple Inc. | 54773 |
104 |
| Amazon Technologies, Inc. | 26646 |
101 |
| Samsung Electronics Co., Ltd. | 145864 |
99 |
| Malikie Innovations Limited | 7148 |
92 |
| Advanced New Technologies Co., Ltd. | 2273 |
88 |
| MasterCard International Incorporated | 5106 |
84 |
| BlackBerry Limited | 5138 |
78 |
| Cisco Technology, Inc. | 19900 |
75 |
| Huawei Technologies Co., Ltd. | 112316 |
69 |
| Google LLC | 42135 |
69 |
| Nippon Telegraph and Telephone Corporation | 17337 |
66 |
| Wells Fargo Bank, National Association | 3817 |
62 |
| Koninklijke Philips N.V. | 24766 |
59 |
| Mitsubishi Electric Corporation | 46037 |
59 |
| Dell Products L.P. | 14332 |
58 |
| Other owners | 5166 |