- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 9/38 - Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers
Patent holdings for IPC class H04L 9/38
Total number of patents in this class: 43
10-year publication summary
|
4
|
4
|
6
|
6
|
6
|
6
|
5
|
1
|
3
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 62220 |
3 |
| Broadridge Financial Solutions, Inc. | 100 |
3 |
| Robert Bosch GmbH | 43587 |
2 |
| Microsoft Technology Licensing, LLC | 54242 |
2 |
| Beijing Baidu Netcom Science Technology Co., Ltd. | 1328 |
2 |
| Malikie Innovations Limited | 6665 |
2 |
| BASF SE | 21113 |
1 |
| LG Electronics Inc. | 74968 |
1 |
| Hitachi, Ltd. | 15895 |
1 |
| Electronics and Telecommunications Research Institute | 9509 |
1 |
| Cellco Partnership d/b/a Verizon Wireless | 626 |
1 |
| Amazon Technologies, Inc. | 27705 |
1 |
| Synopsys, Inc. | 2725 |
1 |
| Lexmark International, Inc. | 1569 |
1 |
| Bosch Automotive Service Solutions Inc. | 231 |
1 |
| Briggs & Stratton Corporation | 77 |
1 |
| Fudan University | 737 |
1 |
| Korea Water Resources Corporation | 32 |
1 |
| Nationz Technologies Inc. | 163 |
1 |
| PQ Solutions Limited | 27 |
1 |
| Other owners | 15 |