- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/58 - Amplifiers using transit-time effect in tubes or semiconductor devices using travelling-wave tubes
Patent holdings for IPC class H03F 3/58
Total number of patents in this class: 33
10-year publication summary
|
4
|
6
|
2
|
0
|
4
|
2
|
1
|
2
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wisconsin Alumni Research Foundation | 3820 |
6 |
| Tesat-Spacecom GmbH & Co. KG | 71 |
6 |
| Thales SA | 2322 |
3 |
| The Boeing Company | 19911 |
2 |
| Airbus Defence and Space Limited | 189 |
2 |
| The Regents of the University of California | 19517 |
1 |
| Ericsson | 21144 |
1 |
| Mitsubishi Electric Corporation | 44851 |
1 |
| Raytheon Company | 8444 |
1 |
| Centre National d'Etudes Spatiales (C.N.E.S.) | 129 |
1 |
| DIRECTV, LLC | 797 |
1 |
| InnoSys, Inc. | 19 |
1 |
| Keysight Technologies, Inc. | 1194 |
1 |
| Lancaster University Business Enterprises Limited | 40 |
1 |
| NEC Network and Sensor Systems, Ltd. | 47 |
1 |
| Semtech Corporation | 350 |
1 |
| University of Lancaster | 53 |
1 |
| Western Electric Company, Incorporated | 18 |
1 |
| UNM Rainforest Innovations | 376 |
1 |
| Other owners | 0 |