- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/22 - Arrangements for preventing the taking of data from a data transmission channel without authorisation
Patent holdings for IPC class H04L 12/22
Total number of patents in this class: 891
10-year publication summary
|
75
|
79
|
45
|
35
|
39
|
26
|
33
|
22
|
22
|
5
|
| 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 |
21 |
| Hewlett Packard Enterprise Development LP | 10702 |
21 |
| Microsoft Corporation | 10954 |
18 |
| McAfee, Inc. | 273 |
18 |
| Hewlett-Packard Development Company, L.P. | 28538 |
17 |
| BlackBerry Limited | 5958 |
14 |
| Qualcomm Incorporated | 76576 |
13 |
| France Telecom | 1618 |
12 |
| Research In Motion Limited | 2283 |
11 |
| Alarm.com Incorporated | 931 |
11 |
| Samsung Electronics Co., Ltd. | 131630 |
10 |
| Intel Corporation | 45621 |
10 |
| Huawei Technologies Co., Ltd. | 100781 |
9 |
| IBM United Kingdom Limited | 4467 |
9 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
9 |
| Royal Bank of Canada | 1839 |
8 |
| Nokia Corporation | 6965 |
8 |
| Sumitomo Electric Industries, Ltd. | 14131 |
8 |
| Sumitomo Wiring Systems, Ltd. | 9367 |
8 |
| AutoNetworks Technologies, Ltd. | 5809 |
8 |
| Other owners | 648 |