- 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: 22
10-year publication summary
|
2
|
1
|
1
|
3
|
2
|
2
|
0
|
3
|
3
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2712 |
3 |
| Hamamatsu Photonics K.K. | 4669 |
2 |
| Applied Physics Technologies, Inc. | 15 |
2 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1449 |
2 |
| Kobelco Research Institute, Inc. | 130 |
2 |
| The Regents of the University of California | 20720 |
1 |
| Sharp Corporation | 10533 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4026 |
1 |
| California Institute of Technology | 4043 |
1 |
| Tsinghua University | 6212 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3790 |
1 |
| A.L.M.T. Corp. | 240 |
1 |
| Edwards Vacuum LLC | 183 |
1 |
| HORIBA STEC, Co., Ltd. | 365 |
1 |
| Kimball Physics, Inc. | 4 |
1 |
| Modern Electron, LLC | 5 |
1 |
| Other owners | 0 |