- 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 | 48351 |
8 |
| Texas Instruments Incorporated | 19644 |
6 |
| Qualcomm Incorporated | 93376 |
4 |
| Toshiba Corporation | 12726 |
3 |
| Analog Devices, Inc. | 3318 |
3 |
| International Business Machines Corporation | 62805 |
2 |
| Murata Manufacturing Co., Ltd. | 25917 |
2 |
| Mediatek Inc. | 5522 |
2 |
| STMicroelectronics S.r.l. | 3367 |
2 |
| University of South Florida | 1907 |
2 |
| Azbil Corporation | 473 |
2 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1451 |
2 |
| FireComms Limited | 30 |
2 |
| Freedman Electronics Pty. Ltd. | 134 |
2 |
| Skyworks Solutions, Inc. | 3986 |
2 |
| Sony Semiconductor Solutions Corporation | 11858 |
2 |
| Toshiba Electronic Devices & Storage Corporation | 2432 |
2 |
| Psemi Corporation | 1086 |
2 |
| Ablic Inc. | 625 |
2 |
| IBM Deutschland GmbH | 911 |
2 |
| Other owners | 43 |