- 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: 1010
10-year publication summary
|
46
|
80
|
75
|
68
|
90
|
90
|
91
|
67
|
75
|
57
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FEI Company | 1062 |
112 |
| Applied Materials, Inc. | 20579 |
92 |
| Hitachi High-Tech Corporation | 5969 |
74 |
| Carl Zeiss SMT GmbH | 3370 |
44 |
| NuFlare Technology, Inc. | 928 |
34 |
| Carl Zeiss Microscopy GmbH | 1296 |
29 |
| Hitachi High-Tech Analysis Corporation | 286 |
28 |
| Applied Materials Israel, Ltd. | 688 |
27 |
| Tokyo Electron Limited | 13948 |
25 |
| Canon Anelva Corporation | 689 |
24 |
| JEOL Ltd. | 626 |
19 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48861 |
17 |
| Nikon Corporation | 7233 |
16 |
| Lam Research Corporation | 5705 |
16 |
| Varian Semiconductor Equipment Associates, Inc. | 1177 |
15 |
| Hitachi High-Technologies Corporation | 1986 |
14 |
| Arcam AB | 200 |
14 |
| Samsung Electronics Co., Ltd. | 159029 |
11 |
| Advantest Corporation | 1670 |
11 |
| Hitachi High-Tech Science Corporation | 48 |
9 |
| Other owners | 379 |