- 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: 24
10-year publication summary
|
1
|
2
|
2
|
1
|
2
|
4
|
2
|
1
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2189 |
6 |
| NuFlare Technology, Inc. | 770 |
5 |
| NuFlare Technology America, Inc. | 21 |
3 |
| Applied Physics Technologies, Inc. | 12 |
2 |
| Hitachi High-Technologies Corporation | 2034 |
1 |
| Lockheed Martin Corporation | 3406 |
1 |
| Agency for Defense Development | 375 |
1 |
| Colorado School of Mines | 164 |
1 |
| National Institute for Materials Science | 1108 |
1 |
| Param Corporation | 8 |
1 |
| The University of Bristol | 237 |
1 |
| Aquasium Technology Limited | 14 |
1 |
| Other owners | 0 |