- All sections
- G - Physics
- G01R - Measuring electric variables; measuring magnetic variables
- G01R 31/311 - Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation of integrated circuits
Patent holdings for IPC class G01R 31/311
Total number of patents in this class: 256
10-year publication summary
|
24
|
20
|
28
|
24
|
26
|
20
|
27
|
21
|
17
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamamatsu Photonics K.K. | 4161 |
36 |
| International Business Machines Corporation | 60644 |
15 |
| DCG Systems, Inc. | 68 |
12 |
| FEI Efa, Inc. | 19 |
10 |
| JENOPTIK Optical Systems GmbH | 176 |
8 |
| Qualcomm Incorporated | 76576 |
6 |
| Battelle Memorial Institute | 2356 |
6 |
| POET Technologies Inc. | 42 |
6 |
| Intel Corporation | 45621 |
5 |
| Advanced Micro Devices, Inc. | 5326 |
4 |
| The United States of America as represented by the Secretary of the Army | 1195 |
4 |
| Centre National d'Etudes Spatiales | 408 |
4 |
| STMicroelectronics (Crolles 2) SAS | 634 |
4 |
| NXP USA, Inc. | 4155 |
4 |
| GLOBALFOUNDRIES Singapore Pte. Ltd. | 734 |
4 |
| Canon Inc. | 36841 |
3 |
| Micron Technology, Inc. | 24960 |
3 |
| Advantest Corporation | 1939 |
3 |
| European Aeronautic Defence and Space Company EADS France | 194 |
3 |
| FEI Company | 851 |
3 |
| Other owners | 113 |