- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/28 - Dispenser-type cathodes, e.g. L-cathode
Patent holdings for IPC class H01J 1/28
Total number of patents in this class: 22
10-year publication summary
|
5
|
2
|
2
|
2
|
1
|
3
|
0
|
0
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ASML Netherlands B.V. | 6816 |
5 |
| Isotopx Ltd | 14 |
3 |
| Koninklijke Philips Electronics N.V. | 13133 |
2 |
| Mapper Lithography IP B.V. | 136 |
2 |
| Philips Intellectual Property & Standards GmbH | 2395 |
2 |
| The Regents of the University of California | 18943 |
1 |
| Beijing University of Technology | 437 |
1 |
| Colorado State University Research Foundation | 675 |
1 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
1 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1102 |
1 |
| The United States of America as represented by the Secretary of the Air Force | 754 |
1 |
| University of Surrey | 208 |
1 |
| Thales Deutschland GmbH Electron Devices | 5 |
1 |
| Other owners | 0 |