- All sections
- H - Electricity
- H03G - Control of amplification
- H03G 3/32 - Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
Patent holdings for IPC class H03G 3/32
Total number of patents in this class: 581
10-year publication summary
|
54
|
49
|
70
|
70
|
49
|
40
|
35
|
33
|
21
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4086 |
71 |
| Bose Corporation | 2949 |
29 |
| Samsung Electronics Co., Ltd. | 142124 |
15 |
| Voyetra Turtle Beach, Inc. | 503 |
14 |
| Sonos, Inc. | 2528 |
12 |
| Harman International Industries, Incorporated | 2586 |
11 |
| DISH Technologies L.L.C. | 1632 |
11 |
| Huawei Technologies Co., Ltd. | 109214 |
9 |
| Amazon Technologies, Inc. | 26271 |
9 |
| ST Portfolio Holdings, LLC | 244 |
8 |
| Qualcomm Incorporated | 83550 |
7 |
| Adeia Guides Inc. | 3035 |
7 |
| Sony Corporation | 31261 |
6 |
| Motorola Mobility LLC | 2632 |
6 |
| Dolby International AB | 1012 |
6 |
| Physio-Control, Inc. | 408 |
6 |
| Apple Inc. | 53955 |
5 |
| International Business Machines Corporation | 60597 |
5 |
| Toyota Motor Corporation | 30924 |
5 |
| eBay Inc. | 3340 |
5 |
| Other owners | 334 |