- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/302 - Controlling tubes by external information, e.g. programme control
Patent holdings for IPC class H01J 37/302
Total number of patents in this class: 380
10-year publication summary
|
39
|
41
|
32
|
26
|
18
|
14
|
25
|
12
|
18
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NuFlare Technology, Inc. | 902 |
105 |
| D2s, Inc. | 188 |
23 |
| Varian Semiconductor Equipment Associates, Inc. | 1208 |
18 |
| FEI Company | 1025 |
17 |
| Applied Materials, Inc. | 19849 |
16 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 46813 |
14 |
| IMS Nanofabrication GmbH | 60 |
14 |
| ASML Netherlands B.V. | 7689 |
13 |
| Axcelis Technologies, Inc. | 431 |
13 |
| Carl Zeiss Microscopy GmbH | 1246 |
10 |
| Hitachi High-Tech Corporation | 5596 |
9 |
| Carl Zeiss SMT GmbH | 3176 |
6 |
| Hitachi High-Tech Analysis Corporation | 286 |
6 |
| Intel Corporation | 46597 |
5 |
| Applied Materials Israel, Ltd. | 638 |
5 |
| JEOL Ltd. | 613 |
5 |
| Sumitomo Heavy Industries ION Technology Co., Ltd. | 122 |
5 |
| Purdue Research Foundation | 3805 |
4 |
| Aselta Nanographics | 11 |
4 |
| Nippon Control System Corporation | 19 |
4 |
| Other owners | 84 |