- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 25/34 - Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
Patent holdings for IPC class H01J 25/34
Total number of patents in this class: 59
10-year publication summary
|
1
|
3
|
3
|
1
|
0
|
6
|
5
|
5
|
6
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NEC Network and Sensor Systems, Ltd. | 49 |
7 |
| Wisconsin Alumni Research Foundation | 3774 |
5 |
| Teraphysics Corporation | 6 |
5 |
| Huawei Technologies Co., Ltd. | 100781 |
4 |
| Tesat-Spacecom GmbH & Co. KG | 68 |
4 |
| Thales Deutschland GmbH Electron Devices | 5 |
3 |
| UNM Rainforest Innovations | 313 |
3 |
| Samsung Electronics Co., Ltd. | 131630 |
2 |
| Thales SA | 2318 |
2 |
| Manhattan Technologies Ltd. | 4 |
2 |
| Thales Electronic Systems GmbH | 12 |
2 |
| Thales | 1854 |
2 |
| Elve Inc. | 13 |
2 |
| Airbus Defence and Space SAS | 502 |
1 |
| Astrium SAS | 164 |
1 |
| Board of Trustees of Michigan State University | 1141 |
1 |
| English Electric Valve Company Limited | 1 |
1 |
| InnoSys, Inc. | 18 |
1 |
| Korea Electrotechnology Research Institute | 411 |
1 |
| L-3 Communications Corporation | 106 |
1 |
| Other owners | 9 |