- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 3/02 - Electron guns
Patent holdings for IPC class H01J 3/02
Total number of patents in this class: 205
10-year publication summary
21
|
14
|
7
|
16
|
19
|
11
|
25
|
16
|
9
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Tsinghua University | 5426 |
9 |
Hon Hai Precision Industry Co., Ltd. | 4157 |
7 |
NCX Corporation | 33 |
7 |
Schlumberger Technology Corporation | 9690 |
6 |
Photo Electron Soul Inc. | 27 |
6 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
5 |
Arcam AB | 204 |
5 |
Tetra Laval Holdings & Finance S.A. | 2007 |
5 |
ASML Netherlands B.V. | 6816 |
4 |
Siemens Healthineers AG | 5714 |
4 |
KLA Corporation | 1223 |
4 |
Siemens AG | 24990 |
3 |
Centre National de La Recherche Scientifique | 9632 |
3 |
Hamamatsu Photonics K.K. | 4161 |
3 |
38th Research Institute, China Electronics Technology Group Corporation | 36 |
3 |
Arizona Board of Regents on behalf of Arizona State University | 2226 |
3 |
ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 149 |
3 |
Organic Spintronics S.r.l. | 5 |
3 |
Peking University | 1111 |
3 |
Aquasium Technology Limited | 14 |
3 |
Other owners | 116 |