- 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: 193
10-year publication summary
|
13
|
13
|
17
|
11
|
21
|
11
|
15
|
10
|
10
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Femtometrix, Inc. | 43 |
10 |
| TeraView Limited | 29 |
10 |
| Hamamatsu Photonics K.K. | 4426 |
8 |
| Tokyo Electron Limited | 12762 |
6 |
| KLA-Tencor Corporation | 2544 |
6 |
| Samsung Electronics Co., Ltd. | 146811 |
5 |
| FormFactor, Inc. | 287 |
5 |
| FEI Efa, Inc. | 19 |
5 |
| DCG Systems, Inc. | 57 |
4 |
| Orbotech Ltd. | 230 |
4 |
| Photon Dynamics, Inc. | 31 |
3 |
| ROHDE & Schwarz GmbH & Co. KG | 1941 |
3 |
| Semilab Semiconductor Physics Laboratory, Co., Ltd. | 13 |
3 |
| KLA Corporation | 1566 |
3 |
| Siemens AG | 24453 |
2 |
| The Boeing Company | 20084 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42945 |
2 |
| Eastman Kodak Company | 2881 |
2 |
| Northrop Grumman Systems Corporation | 2932 |
2 |
| Nokia Solutions And Networks Oy | 6682 |
2 |
| Other owners | 106 |