- All sections
- H - Electricity
- H03G - Control of amplification
- H03G 9/12 - Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
Patent holdings for IPC class H03G 9/12
Total number of patents in this class: 16
10-year publication summary
|
0
|
3
|
1
|
0
|
2
|
1
|
1
|
0
|
1
|
0
|
| 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 |
7 |
| Dolby International AB | 1076 |
6 |
| Dobly International AB | 3 |
1 |
| Direct Sound, LLC | 10 |
1 |
| Dolby International AB | 422 |
1 |
| Other owners | 0 |