- 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: 7290
10-year publication summary
|
580
|
637
|
803
|
913
|
866
|
761
|
729
|
689
|
486
|
26
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nchain Licensing AG | 922 |
229 |
| International Business Machines Corporation | 61846 |
187 |
| Visa International Service Association | 4814 |
142 |
| Microsoft Technology Licensing, LLC | 54403 |
133 |
| Apple Inc. | 56723 |
110 |
| Intel Corporation | 46522 |
108 |
| Amazon Technologies, Inc. | 27386 |
104 |
| Samsung Electronics Co., Ltd. | 150361 |
99 |
| Malikie Innovations Limited | 6855 |
90 |
| Advanced New Technologies Co., Ltd. | 2279 |
88 |
| BlackBerry Limited | 5234 |
86 |
| MasterCard International Incorporated | 5229 |
85 |
| Cisco Technology, Inc. | 22134 |
80 |
| Huawei Technologies Co., Ltd. | 116994 |
71 |
| Google LLC | 43293 |
71 |
| Wells Fargo Bank, National Association | 4159 |
66 |
| Dell Products L.P. | 15581 |
63 |
| Nippon Telegraph and Telephone Corporation | 16266 |
63 |
| Koninklijke Philips N.V. | 25274 |
59 |
| Mitsubishi Electric Corporation | 47219 |
59 |
| Other owners | 5297 |