- 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: 1461
10-year publication summary
112
|
127
|
101
|
110
|
155
|
150
|
148
|
156
|
126
|
33
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Hitachi High-Tech Corporation | 4424 |
313 |
Hitachi High-Technologies Corporation | 2034 |
224 |
FEI Company | 851 |
113 |
ASML Netherlands B.V. | 6816 |
93 |
JEOL Ltd. | 556 |
61 |
Applied Materials Israel, Ltd. | 549 |
34 |
NuFlare Technology, Inc. | 770 |
32 |
Carl Zeiss Microscopy GmbH | 1146 |
31 |
KLA-Tencor Corporation | 2574 |
30 |
Hitachi High-Tech Science Corporation | 326 |
26 |
Applied Materials, Inc. | 16587 |
19 |
Carl Zeiss SMT GmbH | 2646 |
19 |
Fractilia, LLC | 23 |
19 |
KLA Corporation | 1223 |
19 |
Hitachi, Ltd. | 16452 |
17 |
Gatan, Inc. | 111 |
12 |
Delmic IP B.V. | 19 |
11 |
Samsung Electronics Co., Ltd. | 131630 |
10 |
Kioxia Corporation | 9847 |
10 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
9 |
Other owners | 359 |