- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 9/02 - Arrangements for interconnection not involving centralised switching involving a common line for all parties
Patent holdings for IPC class H04M 9/02
Total number of patents in this class: 42
10-year publication summary
|
4
|
0
|
6
|
3
|
11
|
1
|
4
|
8
|
1
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aiphone Co., Ltd. | 71 |
14 |
| Robert Bosch GmbH | 40953 |
5 |
| Ericsson | 20417 |
4 |
| Riedel Communications International GmbH | 53 |
3 |
| Cisco Technology, Inc. | 18858 |
2 |
| SentiAR, Inc. | 22 |
2 |
| Apple Inc. | 50209 |
1 |
| Airbus Operations GmbH | 3188 |
1 |
| Panasonic Corporation | 20786 |
1 |
| Sharp Corporation | 10015 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
1 |
| Amazon Technologies, Inc. | 24422 |
1 |
| Artcline GmbH | 9 |
1 |
| Low Environ AG, LLC | 1 |
1 |
| NEC Platforms, Ltd. | 1106 |
1 |
| Palomar Products, Inc. | 9 |
1 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6132 |
1 |
| DSP Algorithms GmbH | 1 |
1 |
| Other owners | 0 |