- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/22 - Optical or photographic arrangements associated with the tube
Patent holdings for IPC class H01J 37/22
Total number of patents in this class: 1750
10-year publication summary
|
101
|
110
|
155
|
151
|
149
|
157
|
130
|
128
|
147
|
46
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Tech Corporation | 5685 |
373 |
| Hitachi High-Technologies Corporation | 1991 |
224 |
| FEI Company | 1053 |
146 |
| ASML Netherlands B.V. | 7774 |
122 |
| JEOL Ltd. | 620 |
68 |
| Applied Materials Israel, Ltd. | 652 |
46 |
| Carl Zeiss Microscopy GmbH | 1269 |
38 |
| NuFlare Technology, Inc. | 908 |
38 |
| KLA Corporation | 1808 |
31 |
| KLA-Tencor Corporation | 2523 |
30 |
| Applied Materials, Inc. | 20135 |
26 |
| Carl Zeiss SMT GmbH | 3248 |
26 |
| Hitachi High-Tech Analysis Corporation | 284 |
25 |
| Fractilia, LLC | 28 |
24 |
| Hitachi, Ltd. | 15935 |
23 |
| Carl Zeiss MultiSEM GmbH | 174 |
21 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 47675 |
15 |
| Samsung Electronics Co., Ltd. | 154987 |
14 |
| Delmic IP B.V. | 21 |
13 |
| Gatan, Inc. | 112 |
12 |
| Other owners | 435 |