- 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: 359
10-year publication summary
|
40
|
40
|
39
|
41
|
32
|
26
|
17
|
13
|
23
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NuFlare Technology, Inc. | 770 |
99 |
| D2s, Inc. | 150 |
23 |
| Varian Semiconductor Equipment Associates, Inc. | 1282 |
19 |
| FEI Company | 851 |
16 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
15 |
| Applied Materials, Inc. | 16587 |
14 |
| Axcelis Technologies, Inc. | 429 |
14 |
| ASML Netherlands B.V. | 6816 |
12 |
| IMS Nanofabrication GmbH | 56 |
12 |
| Hitachi High-Tech Corporation | 4424 |
9 |
| Carl Zeiss Microscopy GmbH | 1146 |
8 |
| Hitachi High-Tech Science Corporation | 326 |
6 |
| Applied Materials Israel, Ltd. | 549 |
6 |
| Intel Corporation | 45621 |
5 |
| Purdue Research Foundation | 3277 |
4 |
| Aselta Nanographics | 11 |
4 |
| JEOL Ltd. | 556 |
4 |
| Nippon Control System Corporation | 18 |
4 |
| Sumitomo Heavy Industries ION Technology Co., Ltd. | 96 |
4 |
| Samsung Electronics Co., Ltd. | 131630 |
3 |
| Other owners | 78 |