- 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: 42
10-year publication summary
|
2
|
4
|
4
|
6
|
6
|
6
|
6
|
5
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 61759 |
3 |
| Broadridge Financial Solutions, Inc. | 99 |
3 |
| Robert Bosch GmbH | 43114 |
2 |
| Microsoft Technology Licensing, LLC | 54366 |
2 |
| Beijing Baidu Netcom Science Technology Co., Ltd. | 1257 |
2 |
| Malikie Innovations Limited | 6909 |
2 |
| BASF SE | 21137 |
1 |
| LG Electronics Inc. | 73884 |
1 |
| Electronics and Telecommunications Research Institute | 9359 |
1 |
| Cellco Partnership d/b/a Verizon Wireless | 627 |
1 |
| Amazon Technologies, Inc. | 27270 |
1 |
| Synopsys, Inc. | 2753 |
1 |
| Lexmark International, Inc. | 1650 |
1 |
| Bosch Automotive Service Solutions Inc. | 230 |
1 |
| Briggs & Stratton Corporation | 77 |
1 |
| Fudan University | 709 |
1 |
| Korea Water Resources Corporation | 33 |
1 |
| Nationz Technologies Inc. | 163 |
1 |
| PQ Solutions Limited | 27 |
1 |
| The Regents of the University of Colorado, a body corporate | 2730 |
1 |
| Other owners | 14 |