- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/073 - Electron guns using field emission, photo emission, or secondary emission electron sources
Patent holdings for IPC class H01J 37/073
Total number of patents in this class: 321
10-year publication summary
13
|
20
|
15
|
28
|
36
|
31
|
31
|
37
|
38
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Hitachi High-Tech Corporation | 4424 |
40 |
Photo Electron Soul Inc. | 27 |
21 |
Hitachi High-Technologies Corporation | 2034 |
20 |
KLA-Tencor Corporation | 2574 |
19 |
KLA Corporation | 1223 |
16 |
ASML Netherlands B.V. | 6816 |
14 |
ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 149 |
11 |
Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
8 |
National Institute for Materials Science | 1108 |
8 |
NuFlare Technology, Inc. | 770 |
8 |
Nikon Corporation | 7162 |
6 |
National Institute of Advanced Industrial Science and Technology | 3677 |
6 |
Centre National de La Recherche Scientifique | 9632 |
5 |
Applied Materials, Inc. | 16587 |
5 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
5 |
38th Research Institute, China Electronics Technology Group Corporation | 36 |
5 |
Hamamatsu Photonics K.K. | 4161 |
4 |
Board of Trustees of Michigan State University | 1141 |
4 |
FEI Company | 851 |
4 |
National University Corporation Nagoya University | 921 |
4 |
Other owners | 108 |