- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 37/252 - Tubes for spot-analysing by electron or ion beams; Microanalysers
Patent holdings for IPC class H01J 37/252
Total number of patents in this class: 90
10-year publication summary
|
13
|
9
|
4
|
3
|
4
|
6
|
4
|
5
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ALIS Corporation | 36 |
9 |
| FEI Company | 851 |
9 |
| Hitachi High-Technologies Corporation | 2034 |
6 |
| Intelligent Virus Imaging Inc. | 39 |
4 |
| National University Corporation Nara Institute of Science and Technology | 275 |
4 |
| Canon Kabushiki Kaisha | 6884 |
4 |
| Photo Electron Soul Inc. | 27 |
3 |
| Hitachi High-Tech Corporation | 4424 |
3 |
| Canon Inc. | 36841 |
2 |
| Hitachi, Ltd. | 16452 |
2 |
| Hitachi High-Tech Science Corporation | 326 |
2 |
| Japan Science and Technology Agency | 1564 |
2 |
| AVC Co., Ltd. | 4 |
2 |
| Carl Zeiss Microscopy, LLC | 30 |
2 |
| JEOL Ltd. | 556 |
2 |
| Office Tandem L.L.C. | 2 |
2 |
| Oxford Instruments Analytical Limited | 4 |
2 |
| Oxford Instruments NanoTechnology Tools Limited | 145 |
2 |
| Toto Ltd. | 1096 |
2 |
| ASML Netherlands B.V. | 6816 |
1 |
| Other owners | 25 |