- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/31 - Electron-beam or ion-beam tubes for localised treatment of objects for cutting or drilling
Patent holdings for IPC class H01J 37/31
Total number of patents in this class: 108
10-year publication summary
|
10
|
11
|
10
|
9
|
13
|
18
|
11
|
12
|
6
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FEI Company | 851 |
12 |
| NuFlare Technology, Inc. | 770 |
8 |
| Hitachi High-Tech Corporation | 4424 |
7 |
| Hitachi High-Tech Science Corporation | 326 |
6 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
4 |
| Varian Semiconductor Equipment Associates, Inc. | 1282 |
3 |
| ASML Netherlands B.V. | 6816 |
3 |
| Carl Zeiss Microscopy GmbH | 1146 |
3 |
| Gatan, Inc. | 111 |
3 |
| JEOL Ltd. | 556 |
3 |
| Tel Manufacturing and Engineering of America, Inc. | 150 |
3 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
2 |
| Applied Materials, Inc. | 16587 |
2 |
| Applied Materials Israel, Ltd. | 549 |
2 |
| Board of Regents, The University of Texas System | 5370 |
2 |
| Tsinghua University | 5426 |
2 |
| Axcelis Technologies, Inc. | 429 |
2 |
| NexGen Semi Holding, Inc. | 21 |
2 |
| Techinsights Inc. | 92 |
2 |
| Shanghai Huali Integrated Circuit Corporation | 136 |
2 |
| Other owners | 35 |