- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 23/20 - Cavity resonators; Adjustment or tuning thereof
Patent holdings for IPC class H01J 23/20
Total number of patents in this class: 32
10-year publication summary
|
3
|
1
|
2
|
5
|
3
|
3
|
3
|
4
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| University of Virginia Patent Foundation | 1470 |
3 |
| Panasonic Corporation | 20786 |
2 |
| NEC Network and Sensor Systems, Ltd. | 49 |
2 |
| Stc.unm | 699 |
2 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
2 |
| Canon Electron Tubes & Devices Co., Ltd. | 154 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| Lockheed Martin Corporation | 3406 |
1 |
| Advanced Fusion Systems LLC | 66 |
1 |
| et Enterprises Limited | 8 |
1 |
| Fermi Research Alliance, LLC | 95 |
1 |
| Hitachi Power Solutions Co., Ltd. | 94 |
1 |
| InnoSys, Inc. | 18 |
1 |
| ION Beam Applications S.A. | 187 |
1 |
| Jefferson Science Associates, LLC | 106 |
1 |
| Korea Electrotechnology Research Institute | 411 |
1 |
| MKS Instruments, Inc. | 698 |
1 |
| New Japan Radio Co., Ltd. | 94 |
1 |
| New Japan Radio, Ltd | 2 |
1 |
| Other owners | 5 |