- 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: 380
10-year publication summary
|
18
|
29
|
17
|
26
|
33
|
46
|
38
|
33
|
29
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ASML Netherlands B.V. | 7355 |
100 |
| Hitachi High-Tech Corporation | 5275 |
31 |
| Varian Semiconductor Equipment Associates, Inc. | 1232 |
19 |
| NuFlare Technology, Inc. | 835 |
19 |
| Hitachi High-Technologies Corporation | 2004 |
13 |
| Applied Materials, Inc. | 18501 |
13 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 159 |
13 |
| Carl Zeiss MultiSEM GmbH | 131 |
12 |
| KLA Corporation | 1526 |
10 |
| FEI Company | 941 |
9 |
| Mapper Lithography IP B.V. | 135 |
7 |
| Canon Kabushiki Kaisha | 7051 |
7 |
| Carl Zeiss Microscopy GmbH | 1202 |
6 |
| Hermes Microvision Incorporated B.V. | 124 |
6 |
| Hitachi High-Tech Science Corporation | 316 |
5 |
| Axcelis Technologies, Inc. | 406 |
5 |
| KLA-Tencor Corporation | 2545 |
5 |
| Korea Research Institute of Standards and Science | 671 |
5 |
| NuFlare Technology America, Inc. | 23 |
5 |
| JEOL Ltd. | 577 |
4 |
| Other owners | 86 |