- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
Patent holdings for IPC class H01J 37/305
Total number of patents in this class: 961
10-year publication summary
|
76
|
46
|
79
|
74
|
66
|
88
|
89
|
90
|
66
|
66
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FEI Company | 981 |
102 |
| Applied Materials, Inc. | 19204 |
85 |
| Hitachi High-Tech Corporation | 5455 |
66 |
| Carl Zeiss SMT GmbH | 3080 |
33 |
| NuFlare Technology, Inc. | 881 |
33 |
| Carl Zeiss Microscopy GmbH | 1225 |
29 |
| Applied Materials Israel, Ltd. | 620 |
26 |
| Hitachi High-Tech Analysis Corporation | 280 |
26 |
| Canon Anelva Corporation | 689 |
23 |
| Tokyo Electron Limited | 13108 |
22 |
| JEOL Ltd. | 602 |
18 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 46069 |
16 |
| Nikon Corporation | 7304 |
16 |
| Varian Semiconductor Equipment Associates, Inc. | 1226 |
15 |
| Hitachi High-Technologies Corporation | 1996 |
14 |
| Lam Research Corporation | 5362 |
14 |
| Arcam AB | 202 |
14 |
| Samsung Electronics Co., Ltd. | 148924 |
12 |
| Advantest Corporation | 1768 |
11 |
| Hitachi High-Tech Science Corporation | 53 |
9 |
| Other owners | 377 |