- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 1/04 - Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
Patent holdings for IPC class H03F 1/04
Total number of patents in this class: 27
10-year publication summary
|
2
|
6
|
2
|
2
|
4
|
0
|
2
|
2
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 18133 |
3 |
| Renesas Electronics America Inc. | 265 |
3 |
| Qualcomm Incorporated | 76576 |
1 |
| Toshiba Corporation | 12017 |
1 |
| Panasonic Corporation | 20786 |
1 |
| Seiko Epson Corporation | 18724 |
1 |
| Texas Instruments Incorporated | 19376 |
1 |
| Raytheon Company | 8535 |
1 |
| NPX B.V. | 2204 |
1 |
| STMicroelectronics S.r.l. | 3693 |
1 |
| Thales SA | 2318 |
1 |
| Cirrus Logic, Inc. | 1719 |
1 |
| Anpec Electronics Corporation | 278 |
1 |
| Dialog Semiconductor B.V. | 102 |
1 |
| Echowell Electronic Co., Ltd. | 13 |
1 |
| Infineon Technologies Americas Corp. | 768 |
1 |
| Keithley Instruments, Inc. | 49 |
1 |
| Turtle Beach Corporation | 72 |
1 |
| Western Electric Export Corporation | 19 |
1 |
| Psemi Corporation | 898 |
1 |
| Other owners | 3 |