- 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: 277
10-year publication summary
|
21
|
20
|
47
|
19
|
26
|
8
|
15
|
4
|
5
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4253 |
70 |
| Sonos, Inc. | 2764 |
19 |
| DTS, Inc. | 381 |
10 |
| Bongiovi Acoustics LLC. | 76 |
9 |
| Dolby International AB | 1028 |
8 |
| Physio-Control, Inc. | 442 |
6 |
| Sony Corporation | 30536 |
5 |
| Cirrus Logic, Inc. | 1796 |
5 |
| Harman International Industries, Incorporated | 2761 |
5 |
| Native Instruments USA, Inc. | 47 |
5 |
| Yamaha Corporation | 4069 |
4 |
| Harman Becker Automotive Systems GmbH | 680 |
4 |
| THAT Corporation | 57 |
4 |
| Mimi Hearing Technologies GmbH | 58 |
4 |
| Dolby International AB | 758 |
4 |
| Bose Corporation | 3070 |
3 |
| Clarion Co., Ltd. | 789 |
3 |
| Cochlear Limited | 1949 |
3 |
| Guoguang Electric Company Limited | 22 |
3 |
| Qosound, Inc. | 9 |
3 |
| Other owners | 100 |