- 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: 354
10-year publication summary
20
|
18
|
29
|
17
|
26
|
33
|
46
|
38
|
31
|
15
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
ASML Netherlands B.V. | 6816 |
87 |
Hitachi High-Tech Corporation | 4424 |
28 |
Varian Semiconductor Equipment Associates, Inc. | 1282 |
20 |
NuFlare Technology, Inc. | 770 |
16 |
Applied Materials, Inc. | 16587 |
14 |
Hitachi High-Technologies Corporation | 2034 |
13 |
ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 149 |
10 |
KLA Corporation | 1223 |
9 |
FEI Company | 851 |
8 |
Mapper Lithography IP B.V. | 136 |
7 |
Canon Kabushiki Kaisha | 6884 |
7 |
Hermes Microvision Incorporated B.V. | 129 |
7 |
Carl Zeiss MultiSEM GmbH | 85 |
7 |
Axcelis Technologies, Inc. | 429 |
6 |
Carl Zeiss Microscopy GmbH | 1146 |
6 |
Hitachi High-Tech Science Corporation | 326 |
5 |
JEOL Ltd. | 556 |
5 |
KLA-Tencor Corporation | 2574 |
5 |
National University Corporation Nara Institute of Science and Technology | 275 |
5 |
NuFlare Technology America, Inc. | 21 |
5 |
Other owners | 84 |