- 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: 358
10-year publication summary
|
34
|
28
|
32
|
32
|
45
|
25
|
15
|
24
|
25
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Tech Corporation | 5297 |
35 |
| Hitachi High-Technologies Corporation | 2004 |
20 |
| ASML Netherlands B.V. | 7371 |
19 |
| NuFlare Technology, Inc. | 840 |
18 |
| KLA-Tencor Corporation | 2544 |
17 |
| Denka Company Limited | 2565 |
15 |
| FEI Company | 944 |
9 |
| KLA Corporation | 1534 |
8 |
| National Institute for Materials Science | 1105 |
7 |
| ULVAC, Inc. | 1380 |
6 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42549 |
5 |
| Nikon Corporation | 7159 |
5 |
| Hamamatsu Photonics K.K. | 4411 |
5 |
| Advantest Corporation | 1826 |
5 |
| Carl Zeiss Microscopy GmbH | 1202 |
5 |
| Fermi Forward Discovery Group, LLC | 98 |
5 |
| Samsung Electronics Co., Ltd. | 145630 |
4 |
| 38th Research Institute, China Electronics Technology Group Corporation | 50 |
4 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 628 |
4 |
| Photo Electron Soul Inc. | 32 |
4 |
| Other owners | 158 |