- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/13 - Solid thermionic cathodes
Patent holdings for IPC class H01J 1/13
Total number of patents in this class: 40
10-year publication summary
|
1
|
1
|
1
|
0
|
3
|
2
|
5
|
2
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Varex Imaging Corporation | 294 |
3 |
| General Electric Company | 18133 |
2 |
| Koninklijke Philips Electronics N.V. | 13133 |
2 |
| The Board of Trustees of the Leland Stanford Junior University | 6054 |
2 |
| Hamamatsu Photonics K.K. | 4161 |
2 |
| E2V Technologies (UK) Limited | 33 |
2 |
| NuFlare Technology, Inc. | 770 |
2 |
| Philips Intellectual Property & Standards GmbH | 2395 |
2 |
| Hitachi High-Tech Corporation | 4424 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| Micron Technology, Inc. | 24960 |
1 |
| Hitachi High-Technologies Corporation | 2034 |
1 |
| Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | 166 |
1 |
| Shimadzu Corporation | 5791 |
1 |
| Arcam AB | 204 |
1 |
| Bourns, Inc. | 171 |
1 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
1 |
| INFICON, Inc. | 66 |
1 |
| MOXTEK, Inc. | 219 |
1 |
| Param Corporation | 8 |
1 |
| Other owners | 10 |