- 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: 1802
10-year publication summary
|
101
|
110
|
155
|
151
|
149
|
157
|
130
|
129
|
145
|
95
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Tech Corporation | 5995 |
383 |
| Hitachi High-Technologies Corporation | 1985 |
224 |
| FEI Company | 1063 |
149 |
| ASML Netherlands B.V. | 8045 |
131 |
| JEOL Ltd. | 627 |
68 |
| Applied Materials Israel, Ltd. | 690 |
49 |
| Carl Zeiss Microscopy GmbH | 1305 |
39 |
| NuFlare Technology, Inc. | 931 |
38 |
| KLA Corporation | 1891 |
34 |
| KLA-Tencor Corporation | 2514 |
30 |
| Carl Zeiss SMT GmbH | 3377 |
29 |
| Applied Materials, Inc. | 20625 |
26 |
| Fractilia, LLC | 30 |
26 |
| Hitachi High-Tech Analysis Corporation | 287 |
25 |
| Hitachi, Ltd. | 16221 |
24 |
| Carl Zeiss MultiSEM GmbH | 194 |
23 |
| Samsung Electronics Co., Ltd. | 159473 |
17 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 49324 |
15 |
| Delmic IP B.V. | 22 |
13 |
| Gatan, Inc. | 112 |
12 |
| Other owners | 447 |