- 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
|
6
|
3
|
11
|
1
|
5
|
8
|
1
|
1
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aiphone Co., Ltd. | 68 |
14 |
| Ericsson | 22717 |
4 |
| Robert Bosch GmbH | 44160 |
4 |
| Riedel Communications International GmbH | 47 |
3 |
| Cisco Technology, Inc. | 22493 |
2 |
| RingCentral, Inc. | 793 |
2 |
| SentiAR, Inc. | 25 |
2 |
| Apple Inc. | 58742 |
1 |
| Airbus Operations GmbH | 3446 |
1 |
| Panasonic Corporation | 19019 |
1 |
| Sharp Corporation | 10545 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 33997 |
1 |
| Amazon Technologies, Inc. | 28087 |
1 |
| Artcline GmbH | 10 |
1 |
| NEC Platforms, Ltd. | 1064 |
1 |
| Palomar Products, Inc. | 9 |
1 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6117 |
1 |
| DSP Algorithms GmbH | 1 |
1 |
| Other owners | 0 |