- 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: 6032
10-year publication summary
|
195
|
296
|
368
|
612
|
667
|
839
|
935
|
877
|
733
|
288
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 63228 |
182 |
| BlackBerry Limited | 12254 |
136 |
| Advanced New Technologies Co., Ltd. | 2703 |
112 |
| Microsoft Technology Licensing, LLC | 48394 |
111 |
| Intel Corporation | 46080 |
110 |
| Visa International Service Association | 3926 |
97 |
| Amazon Technologies, Inc. | 23321 |
88 |
| Nchain Licensing AG | 400 |
88 |
| Apple Inc. | 46297 |
78 |
| MasterCard International Incorporated | 4718 |
75 |
| Samsung Electronics Co., Ltd. | 123537 |
74 |
| Cisco Technology, Inc. | 18706 |
63 |
| Mitsubishi Electric Corporation | 41731 |
57 |
| Huawei Technologies Co., Ltd. | 91895 |
57 |
| Nippon Telegraph and Telephone Corporation | 11682 |
56 |
| Koninklijke Philips N.V. | 22715 |
55 |
| Google LLC | 36075 |
54 |
| NEC Corporation | 30716 |
51 |
| OT Patent Escrow, LLC | 1747 |
49 |
| Nchain Holdings Limited | 362 |
45 |
| Other owners | 4394 |