- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/12 - Lenses electrostatic
Patent holdings for IPC class H01J 37/12
Total number of patents in this class: 406
10-year publication summary
|
29
|
17
|
26
|
33
|
46
|
39
|
33
|
30
|
30
|
25
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ASML Netherlands B.V. | 8005 |
113 |
| Hitachi High-Tech Corporation | 5957 |
33 |
| NuFlare Technology, Inc. | 927 |
21 |
| Carl Zeiss MultiSEM GmbH | 191 |
21 |
| Applied Materials, Inc. | 20552 |
18 |
| Varian Semiconductor Equipment Associates, Inc. | 1179 |
17 |
| Hitachi High-Technologies Corporation | 1986 |
13 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 157 |
13 |
| FEI Company | 1062 |
12 |
| KLA Corporation | 1874 |
10 |
| Canon Kabushiki Kaisha | 7373 |
7 |
| Carl Zeiss Microscopy GmbH | 1290 |
6 |
| Mapper Lithography IP B.V. | 129 |
6 |
| Hermes Microvision Incorporated B.V. | 122 |
6 |
| KLA-Tencor Corporation | 2517 |
5 |
| Korea Research Institute of Standards and Science | 691 |
5 |
| NuFlare Technology America, Inc. | 23 |
5 |
| Hitachi High-Tech Analysis Corporation | 286 |
5 |
| Axcelis Technologies, Inc. | 422 |
4 |
| JEOL Ltd. | 625 |
4 |
| Other owners | 82 |