- 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: 6452
10-year publication summary
|
297
|
368
|
610
|
666
|
844
|
940
|
890
|
757
|
714
|
197
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 60644 |
179 |
| Nchain Licensing AG | 612 |
145 |
| Visa International Service Association | 4194 |
120 |
| Microsoft Technology Licensing, LLC | 51439 |
116 |
| Advanced New Technologies Co., Ltd. | 2617 |
110 |
| Intel Corporation | 45621 |
105 |
| Amazon Technologies, Inc. | 24422 |
95 |
| BlackBerry Limited | 5958 |
93 |
| Malikie Innovations Limited | 7703 |
93 |
| Samsung Electronics Co., Ltd. | 131630 |
84 |
| Apple Inc. | 50209 |
84 |
| MasterCard International Incorporated | 4846 |
80 |
| Cisco Technology, Inc. | 18858 |
67 |
| Huawei Technologies Co., Ltd. | 100781 |
66 |
| Nippon Telegraph and Telephone Corporation | 14195 |
65 |
| Google LLC | 38759 |
64 |
| Koninklijke Philips N.V. | 22975 |
59 |
| Mitsubishi Electric Corporation | 43934 |
58 |
| NEC Corporation | 32703 |
51 |
| The Toronto-Dominion Bank | 2288 |
49 |
| Other owners | 4669 |