- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/06 - Electron sourcesElectron guns
Patent holdings for IPC class H01J 37/06
Total number of patents in this class: 389
10-year publication summary
|
28
|
32
|
32
|
45
|
25
|
16
|
25
|
25
|
34
|
16
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Tech Corporation | 5857 |
39 |
| Hitachi High-Technologies Corporation | 1987 |
20 |
| Denka Company Limited | 2728 |
20 |
| ASML Netherlands B.V. | 7939 |
19 |
| NuFlare Technology, Inc. | 923 |
19 |
| KLA-Tencor Corporation | 2518 |
17 |
| FEI Company | 1054 |
10 |
| KLA Corporation | 1856 |
10 |
| National Institute for Materials Science | 1086 |
7 |
| ULVAC, Inc. | 1343 |
6 |
| Carl Zeiss MultiSEM GmbH | 186 |
6 |
| Samsung Electronics Co., Ltd. | 157946 |
5 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48438 |
5 |
| Nikon Corporation | 7226 |
5 |
| Hamamatsu Photonics K.K. | 4686 |
5 |
| Carl Zeiss Microscopy GmbH | 1273 |
5 |
| Fermi Forward Discovery Group, LLC | 111 |
5 |
| Advantest Corporation | 1693 |
4 |
| 38th Research Institute, China Electronics Technology Group Corporation | 55 |
4 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 578 |
4 |
| Other owners | 174 |