- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 3/18 - Electrostatic lenses
Patent holdings for IPC class H01J 3/18
Total number of patents in this class: 20
10-year publication summary
|
1
|
1
|
0
|
0
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0
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1
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0
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0
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0
|
0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Thermo Fisher Scientific (Bremen) GmbH | 562 |
4 |
| Varian Semiconductor Equipment Associates, Inc. | 1247 |
2 |
| Purdue Research Foundation | 3480 |
2 |
| General Electric Company | 17800 |
1 |
| Nikon Corporation | 7118 |
1 |
| ASML Netherlands B.V. | 7190 |
1 |
| Shimadzu Corporation | 6036 |
1 |
| Axcelis Technologies, Inc. | 392 |
1 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 153 |
1 |
| SEN Corporation, an Shi and Axcelis Company | 16 |
1 |
| Sumitomo Heavy Industries ION Technology Co., Ltd. | 108 |
1 |
| Standard Beam Company, Inc. | 1 |
1 |
| Siemens Healthineers AG | 6391 |
1 |
| Canon Kabushiki Kaisha | 6954 |
1 |
| Canon Electron Tubes & Devices Co., Ltd. | 162 |
1 |
| Other owners | 0 |