- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/148 - Solid thermionic cathodes characterised by the material with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material
Patent holdings for IPC class H01J 1/148
Total number of patents in this class: 27
10-year publication summary
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2
|
2
|
1
|
2
|
4
|
2
|
1
|
2
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2531 |
6 |
| NuFlare Technology, Inc. | 836 |
5 |
| NuFlare Technology America, Inc. | 23 |
3 |
| Applied Physics Technologies, Inc. | 14 |
2 |
| Hitachi High-Technologies Corporation | 2006 |
1 |
| Lockheed Martin Corporation | 3274 |
1 |
| Agency for Defense Development | 429 |
1 |
| Colorado School of Mines | 178 |
1 |
| Kimball Physics, Inc. | 5 |
1 |
| Korea Research Institute of Standards and Science | 671 |
1 |
| National Institute for Materials Science | 1109 |
1 |
| Param Corporation | 8 |
1 |
| The University of Bristol | 250 |
1 |
| West Virginia University Board of Governors on Behalf of West Virginia University | 145 |
1 |
| Aquasium Technology Limited | 17 |
1 |
| Other owners | 0 |