- 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
|
4
|
1
|
1
|
0
|
0
|
0
|
1
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Thermo Fisher Scientific (Bremen) GmbH | 496 |
4 |
| Varian Semiconductor Equipment Associates, Inc. | 1282 |
2 |
| Purdue Research Foundation | 3277 |
2 |
| General Electric Company | 18133 |
1 |
| Nikon Corporation | 7162 |
1 |
| ASML Netherlands B.V. | 6816 |
1 |
| Shimadzu Corporation | 5791 |
1 |
| Axcelis Technologies, Inc. | 429 |
1 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 149 |
1 |
| SEN Corporation, an Shi and Axcelis Company | 19 |
1 |
| Sumitomo Heavy Industries ION Technology Co., Ltd. | 96 |
1 |
| Standard Beam Company, Inc. | 1 |
1 |
| Siemens Healthineers AG | 5714 |
1 |
| Canon Kabushiki Kaisha | 6884 |
1 |
| Canon Electron Tubes & Devices Co., Ltd. | 154 |
1 |
| Other owners | 0 |