- 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: 1711
10-year publication summary
|
101
|
110
|
155
|
150
|
148
|
157
|
130
|
127
|
147
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Tech Corporation | 5571 |
368 |
| Hitachi High-Technologies Corporation | 1993 |
224 |
| FEI Company | 1019 |
141 |
| ASML Netherlands B.V. | 7663 |
119 |
| JEOL Ltd. | 612 |
67 |
| Applied Materials Israel, Ltd. | 636 |
46 |
| Carl Zeiss Microscopy GmbH | 1241 |
37 |
| NuFlare Technology, Inc. | 897 |
37 |
| KLA Corporation | 1746 |
31 |
| KLA-Tencor Corporation | 2525 |
30 |
| Applied Materials, Inc. | 19683 |
26 |
| Hitachi High-Tech Analysis Corporation | 285 |
25 |
| Carl Zeiss SMT GmbH | 3163 |
24 |
| Fractilia, LLC | 27 |
24 |
| Hitachi, Ltd. | 15800 |
21 |
| Carl Zeiss MultiSEM GmbH | 160 |
16 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 46613 |
14 |
| Samsung Electronics Co., Ltd. | 151485 |
13 |
| Delmic IP B.V. | 21 |
13 |
| Gatan, Inc. | 112 |
12 |
| Other owners | 423 |