- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/142 - Solid thermionic cathodes characterised by the material with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material
Patent holdings for IPC class H01J 1/142
Total number of patents in this class: 9
10-year publication summary
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1
|
2
|
1
|
0
|
2
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0
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0
|
1
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Regents of the University of California | 20059 |
2 |
| Koninklijke Philips N.V. | 24841 |
1 |
| Beijing University of Technology | 497 |
1 |
| Colorado School of Mines | 184 |
1 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1314 |
1 |
| Philips Deutschland GmbH | 182 |
1 |
| PLANSEE SE | 232 |
1 |
| Triad National Security, LLC | 614 |
1 |
| Other owners | 0 |