- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/345 - DC amplifiers in which all stages are DC-coupled with semiconductor devices only with field-effect devices
Patent holdings for IPC class H03F 3/345
Total number of patents in this class: 97
10-year publication summary
|
4
|
16
|
14
|
8
|
8
|
6
|
8
|
9
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 47625 |
8 |
| Texas Instruments Incorporated | 19638 |
6 |
| Qualcomm Incorporated | 90374 |
4 |
| Toshiba Corporation | 12695 |
3 |
| Analog Devices, Inc. | 3337 |
3 |
| International Business Machines Corporation | 62251 |
2 |
| Murata Manufacturing Co., Ltd. | 25552 |
2 |
| Mediatek Inc. | 5466 |
2 |
| STMicroelectronics S.r.l. | 3403 |
2 |
| University of South Florida | 1870 |
2 |
| Azbil Corporation | 473 |
2 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1430 |
2 |
| FireComms Limited | 34 |
2 |
| Freedman Electronics Pty. Ltd. | 132 |
2 |
| Skyworks Solutions, Inc. | 3892 |
2 |
| Sony Semiconductor Solutions Corporation | 11253 |
2 |
| Toshiba Electronic Devices & Storage Corporation | 2278 |
2 |
| Psemi Corporation | 1092 |
2 |
| Ablic Inc. | 613 |
2 |
| IBM Deutschland GmbH | 861 |
2 |
| Other owners | 43 |