- 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: 988
10-year publication summary
|
46
|
80
|
75
|
68
|
90
|
90
|
90
|
67
|
75
|
29
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FEI Company | 1045 |
108 |
| Applied Materials, Inc. | 20085 |
90 |
| Hitachi High-Tech Corporation | 5669 |
67 |
| Carl Zeiss SMT GmbH | 3235 |
41 |
| NuFlare Technology, Inc. | 909 |
33 |
| Carl Zeiss Microscopy GmbH | 1267 |
29 |
| Applied Materials Israel, Ltd. | 648 |
27 |
| Hitachi High-Tech Analysis Corporation | 284 |
26 |
| Canon Anelva Corporation | 687 |
24 |
| Tokyo Electron Limited | 13561 |
22 |
| JEOL Ltd. | 617 |
18 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 47518 |
16 |
| Nikon Corporation | 7298 |
16 |
| Lam Research Corporation | 5544 |
16 |
| Varian Semiconductor Equipment Associates, Inc. | 1197 |
15 |
| Hitachi High-Technologies Corporation | 1992 |
14 |
| Arcam AB | 202 |
14 |
| Samsung Electronics Co., Ltd. | 154406 |
12 |
| Advantest Corporation | 1704 |
11 |
| Hitachi High-Tech Science Corporation | 49 |
9 |
| Other owners | 380 |