- 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
|
2
|
1
|
0
|
2
|
0
|
0
|
1
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Regents of the University of California | 20924 |
2 |
| Koninklijke Philips N.V. | 26073 |
1 |
| Beijing University of Technology | 522 |
1 |
| Colorado School of Mines | 186 |
1 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1475 |
1 |
| Philips Deutschland GmbH | 182 |
1 |
| PLANSEE SE | 232 |
1 |
| Triad National Security, LLC | 634 |
1 |
| Other owners | 0 |