- All sections
- H - Electricity
- H03G - Control of amplification
- H03G 9/02 - Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
Patent holdings for IPC class H03G 9/02
Total number of patents in this class: 270
10-year publication summary
|
28
|
21
|
20
|
48
|
19
|
26
|
8
|
13
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4057 |
67 |
| Sonos, Inc. | 2462 |
17 |
| DTS, Inc. | 382 |
10 |
| Bongiovi Acoustics LLC. | 80 |
9 |
| Dolby International AB | 1048 |
8 |
| Physio-Control, Inc. | 416 |
6 |
| Sony Corporation | 31541 |
5 |
| Cirrus Logic, Inc. | 1748 |
5 |
| Harman International Industries, Incorporated | 2539 |
5 |
| Native Instruments USA, Inc. | 39 |
5 |
| Yamaha Corporation | 4075 |
4 |
| Harman Becker Automotive Systems GmbH | 643 |
4 |
| THAT Corporation | 58 |
4 |
| Mimi Hearing Technologies GmbH | 58 |
4 |
| Bose Corporation | 2921 |
3 |
| Clarion Co., Ltd. | 870 |
3 |
| Guoguang Electric Company Limited | 18 |
3 |
| Qosound, Inc. | 9 |
3 |
| Oticon A/S | 850 |
3 |
| Widex A/S | 767 |
3 |
| Other owners | 99 |