- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/55 - Amplifiers using transit-time effect in tubes or semiconductor devices with semiconductor devices only
Patent holdings for IPC class H03F 3/55
Total number of patents in this class: 11
10-year publication summary
|
3
|
4
|
1
|
1
|
0
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0
|
0
|
1
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 15535 |
3 |
| The United States of America as represented by the Secretary of the Navy | 2760 |
1 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4975 |
1 |
| Keysight Technologies, Inc. | 1200 |
1 |
| North Carolina a & T State University | 21 |
1 |
| Semtech Corporation | 354 |
1 |
| The United States of America as represented by Secretary of the Navy | 143 |
1 |
| Space Systems/Loral, LLC | 22 |
1 |
| Maxar Space LLC | 250 |
1 |
| Other owners | 0 |