- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/141 - Electromagnetic lenses
Patent holdings for IPC class H01J 37/141
Total number of patents in this class: 280
10-year publication summary
|
14
|
20
|
17
|
32
|
30
|
19
|
19
|
21
|
24
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Tech Corporation | 5455 |
43 |
| NuFlare Technology, Inc. | 881 |
28 |
| ASML Netherlands B.V. | 7573 |
27 |
| Hitachi High-Technologies Corporation | 1996 |
23 |
| JEOL Ltd. | 602 |
10 |
| Carl Zeiss Microscopy GmbH | 1225 |
9 |
| FEI Company | 981 |
9 |
| Matsusada Precision, Inc. | 34 |
7 |
| Carl Zeiss MultiSEM GmbH | 149 |
6 |
| Varian Semiconductor Equipment Associates, Inc. | 1226 |
5 |
| Advantest Corporation | 1768 |
5 |
| KLA-Tencor Corporation | 2539 |
5 |
| Hermes Microvision Incorporated B.V. | 123 |
5 |
| KLA Corporation | 1655 |
5 |
| Hitachi, Ltd. | 15679 |
4 |
| Applied Materials Israel, Ltd. | 620 |
3 |
| Nikon Corporation | 7304 |
3 |
| Axcelis Technologies, Inc. | 427 |
3 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 155 |
3 |
| IMS Nanofabrication GmbH | 60 |
3 |
| Other owners | 74 |