- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 40/00 - Photoelectric discharge tubes not involving the ionisation of a gas
Patent holdings for IPC class H01J 40/00
Total number of patents in this class: 47
10-year publication summary
|
1
|
2
|
1
|
0
|
1
|
0
|
0
|
0
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FEI Company | 947 |
4 |
| KLA-Tencor Corporation | 2544 |
3 |
| Micromass UK Limited | 1117 |
3 |
| JEOL Ltd. | 581 |
2 |
| Sony Corporation | 31028 |
1 |
| The Regents of the University of California | 19943 |
1 |
| Canon Inc. | 40015 |
1 |
| Centre National de La Recherche Scientifique | 10442 |
1 |
| Toshiba Corporation | 12350 |
1 |
| Hitachi, Ltd. | 15499 |
1 |
| Applied Materials Israel, Ltd. | 612 |
1 |
| Lockheed Martin Corporation | 3276 |
1 |
| Aptina Imaging Corporation | 466 |
1 |
| Agilent Technologies, Inc. | 2636 |
1 |
| Harris Corporation | 1431 |
1 |
| Hamamatsu Photonics K.K. | 4419 |
1 |
| Searete LLC | 309 |
1 |
| CEDES AG | 87 |
1 |
| Decision Sciences International Corporation | 80 |
1 |
| Electron Optica, Inc. | 5 |
1 |
| Other owners | 19 |