- 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: 206
10-year publication summary
|
7
|
16
|
20
|
11
|
25
|
17
|
12
|
6
|
6
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tsinghua University | 6211 |
9 |
| Hon Hai Precision Industry Co., Ltd. | 4022 |
7 |
| Photo Electron Soul Inc. | 35 |
7 |
| NCX Corporation | 39 |
7 |
| Arcam AB | 200 |
6 |
| Schlumberger Technology Corporation | 11818 |
5 |
| ASML Netherlands B.V. | 7925 |
5 |
| Tetra Laval Holdings & Finance S.A. | 2231 |
5 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11123 |
4 |
| Siemens Healthineers AG | 7068 |
4 |
| KLA Corporation | 1849 |
4 |
| Siemens AG | 24029 |
3 |
| Centre National de La Recherche Scientifique | 11023 |
3 |
| 38th Research Institute, China Electronics Technology Group Corporation | 55 |
3 |
| Arizona Board of Regents on behalf of Arizona State University | 2934 |
3 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 156 |
3 |
| Organic Spintronics S.r.l. | 5 |
3 |
| Peking University | 1457 |
3 |
| Shanghai United Imaging Healthcare Co., Ltd. | 2116 |
3 |
| Varex Imaging Corporation | 332 |
3 |
| Other owners | 116 |