- 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: 276
10-year publication summary
|
27
|
21
|
20
|
47
|
19
|
26
|
8
|
15
|
4
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4134 |
70 |
| Sonos, Inc. | 2638 |
19 |
| DTS, Inc. | 382 |
10 |
| Bongiovi Acoustics LLC. | 77 |
9 |
| Dolby International AB | 1027 |
8 |
| Physio-Control, Inc. | 431 |
6 |
| Sony Corporation | 30979 |
5 |
| Cirrus Logic, Inc. | 1780 |
5 |
| Harman International Industries, Incorporated | 2655 |
5 |
| Native Instruments USA, Inc. | 40 |
5 |
| Yamaha Corporation | 4073 |
4 |
| Harman Becker Automotive Systems GmbH | 651 |
4 |
| THAT Corporation | 57 |
4 |
| Mimi Hearing Technologies GmbH | 58 |
4 |
| Dolby International AB | 652 |
4 |
| Bose Corporation | 3002 |
3 |
| Clarion Co., Ltd. | 860 |
3 |
| Cochlear Limited | 1892 |
3 |
| Guoguang Electric Company Limited | 21 |
3 |
| Qosound, Inc. | 9 |
3 |
| Other owners | 99 |