- All sections
- G - Physics
- G01R - Measuring electric variablesmeasuring 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: 276
10-year publication summary
|
20
|
28
|
24
|
26
|
20
|
27
|
20
|
17
|
18
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamamatsu Photonics K.K. | 4448 |
38 |
| International Business Machines Corporation | 61471 |
15 |
| DCG Systems, Inc. | 55 |
12 |
| FEI Efa, Inc. | 19 |
10 |
| JENOPTIK Optical Systems GmbH | 188 |
9 |
| Battelle Memorial Institute | 2492 |
8 |
| POET Technologies Inc. | 50 |
8 |
| Qualcomm Incorporated | 86553 |
6 |
| Intel Corporation | 47129 |
6 |
| Advantest Corporation | 1789 |
5 |
| Samsung Electronics Co., Ltd. | 147622 |
4 |
| Micron Technology, Inc. | 26210 |
4 |
| Advanced Micro Devices, Inc. | 5705 |
4 |
| The United States of America as represented by the Secretary of the Army | 1216 |
4 |
| II-VI Delaware, Inc. | 1650 |
4 |
| STMicroelectronics (Crolles 2) SAS | 645 |
4 |
| NXP USA, Inc. | 4310 |
4 |
| GLOBALFOUNDRIES Singapore Pte. Ltd. | 812 |
4 |
| Canon Inc. | 40398 |
3 |
| Centre National d'Etudes Spatiales | 407 |
3 |
| Other owners | 121 |