- 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: 93
10-year publication summary
|
8
|
3
|
4
|
16
|
14
|
8
|
8
|
5
|
8
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 43934 |
8 |
| Qualcomm Incorporated | 76576 |
4 |
| Texas Instruments Incorporated | 19376 |
4 |
| International Business Machines Corporation | 60644 |
3 |
| Toshiba Corporation | 12017 |
3 |
| Analog Devices, Inc. | 3475 |
3 |
| Murata Manufacturing Co., Ltd. | 22355 |
2 |
| Mediatek Inc. | 4584 |
2 |
| University of South Florida | 1817 |
2 |
| Azbil Corporation | 486 |
2 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1254 |
2 |
| FireComms Limited | 33 |
2 |
| Freedman Electronics Pty. Ltd. | 112 |
2 |
| Skyworks Solutions, Inc. | 3450 |
2 |
| Toshiba Electronic Devices & Storage Corporation | 1602 |
2 |
| Psemi Corporation | 898 |
2 |
| Ablic Inc. | 621 |
2 |
| NXP B.V. | 2185 |
2 |
| IBM Deutschland GmbH | 670 |
2 |
| NEC Corporation | 32703 |
1 |
| Other owners | 41 |