- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/146 - Solid thermionic cathodes characterised by the material with metals or alloys as an emissive material
Patent holdings for IPC class H01J 1/146
Total number of patents in this class: 21
10-year publication summary
|
3
|
2
|
1
|
1
|
3
|
2
|
2
|
0
|
3
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamamatsu Photonics K.K. | 4405 |
2 |
| Applied Physics Technologies, Inc. | 14 |
2 |
| Denka Company Limited | 2563 |
2 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1294 |
2 |
| Kobelco Research Institute, Inc. | 124 |
2 |
| The Regents of the University of California | 19868 |
1 |
| Sharp Corporation | 10312 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4039 |
1 |
| California Institute of Technology | 3973 |
1 |
| Tsinghua University | 5890 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3797 |
1 |
| A.L.M.T. Corp. | 226 |
1 |
| Edwards Vacuum LLC | 176 |
1 |
| HORIBA STEC, Co., Ltd. | 333 |
1 |
| Kimball Physics, Inc. | 5 |
1 |
| Modern Electron, LLC | 5 |
1 |
| Other owners | 0 |