- 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: 7440
10-year publication summary
|
611
|
667
|
845
|
947
|
898
|
773
|
744
|
710
|
487
|
229
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nchain Licensing AG | 963 |
234 |
| International Business Machines Corporation | 62517 |
188 |
| Visa International Service Association | 4929 |
142 |
| Microsoft Technology Licensing, LLC | 54399 |
134 |
| Apple Inc. | 58534 |
113 |
| Intel Corporation | 46934 |
113 |
| Samsung Electronics Co., Ltd. | 156823 |
105 |
| Amazon Technologies, Inc. | 28001 |
105 |
| Advanced New Technologies Co., Ltd. | 2275 |
88 |
| MasterCard International Incorporated | 5355 |
87 |
| Malikie Innovations Limited | 6516 |
82 |
| Cisco Technology, Inc. | 22452 |
80 |
| BlackBerry Limited | 4884 |
75 |
| Huawei Technologies Co., Ltd. | 122474 |
72 |
| Google LLC | 44361 |
71 |
| Wells Fargo Bank, National Association | 4444 |
68 |
| Dell Products L.P. | 16639 |
65 |
| Nippon Telegraph and Telephone Corporation | 15922 |
60 |
| Koninklijke Philips N.V. | 25731 |
59 |
| Mitsubishi Electric Corporation | 47860 |
59 |
| Other owners | 5440 |