- All sections
- H - Electricity
- H04B - Transmission
- H04B 1/20 - Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
Patent holdings for IPC class H04B 1/20
Total number of patents in this class: 225
10-year publication summary
|
21
|
22
|
13
|
12
|
14
|
16
|
8
|
2
|
8
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sonos, Inc. | 2274 |
18 |
| Universal Electronics Inc. | 687 |
14 |
| Shure Acquisition Holdings, Inc. | 449 |
10 |
| Sony Corporation | 32931 |
6 |
| Koninklijke Philips Electronics N.V. | 13133 |
6 |
| Yamaha Corporation | 4054 |
6 |
| Apple Inc. | 50209 |
5 |
| Chestnut Hill Sound, Inc. | 8 |
5 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| LG Electronics Inc. | 69257 |
4 |
| Nokia Technologies Oy | 15057 |
4 |
| TiVo Corporation | 462 |
4 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4569 |
3 |
| Bose Corporation | 2880 |
3 |
| Gentex Corporation | 1742 |
3 |
| Google LLC | 38759 |
3 |
| Airborne Media Group | 3 |
3 |
| Honeywell International Inc. | 13799 |
2 |
| Intel Corporation | 45621 |
2 |
| U.S. Philips Corporation | 653 |
2 |
| Other owners | 118 |