- 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: 272
10-year publication summary
|
28
|
28
|
21
|
20
|
48
|
19
|
26
|
8
|
11
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 3883 |
66 |
| Sonos, Inc. | 2274 |
16 |
| Bongiovi Acoustics LLC. | 92 |
12 |
| DTS, Inc. | 381 |
10 |
| Dolby International AB | 1076 |
8 |
| Physio-Control, Inc. | 420 |
6 |
| Sony Corporation | 32931 |
5 |
| Cirrus Logic, Inc. | 1719 |
5 |
| Harman International Industries, Incorporated | 2443 |
5 |
| Native Instruments USA, Inc. | 37 |
5 |
| Yamaha Corporation | 4054 |
4 |
| Harman Becker Automotive Systems GmbH | 645 |
4 |
| THAT Corporation | 62 |
4 |
| Mimi Hearing Technologies GmbH | 57 |
4 |
| Oticon A/S | 842 |
4 |
| Mitsubishi Electric Corporation | 43934 |
3 |
| Bose Corporation | 2880 |
3 |
| Clarion Co., Ltd. | 896 |
3 |
| Guoguang Electric Company Limited | 16 |
3 |
| Qosound, Inc. | 11 |
3 |
| Other owners | 99 |