- All sections
- G - Physics
- G01R - Measuring electric variablesmeasuring magnetic variables
- G01R 31/308 - Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation
Patent holdings for IPC class G01R 31/308
Total number of patents in this class: 197
10-year publication summary
|
13
|
17
|
11
|
21
|
11
|
15
|
11
|
10
|
15
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamamatsu Photonics K.K. | 4581 |
12 |
| Femtometrix, Inc. | 43 |
10 |
| TeraView Limited | 31 |
10 |
| Tokyo Electron Limited | 13428 |
6 |
| KLA-Tencor Corporation | 2525 |
6 |
| Samsung Electronics Co., Ltd. | 152016 |
5 |
| FormFactor, Inc. | 288 |
5 |
| FEI Efa, Inc. | 19 |
5 |
| DCG Systems, Inc. | 52 |
4 |
| Orbotech Ltd. | 249 |
4 |
| Photon Dynamics, Inc. | 27 |
3 |
| ROHDE & Schwarz GmbH & Co. KG | 1980 |
3 |
| KLA Corporation | 1762 |
3 |
| Semilab USA, LLC | 6 |
3 |
| Siemens AG | 24337 |
2 |
| The Boeing Company | 20102 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 46735 |
2 |
| Eastman Kodak Company | 2722 |
2 |
| Raytheon Company | 8472 |
2 |
| Northrop Grumman Systems Corporation | 2926 |
2 |
| Other owners | 106 |