- All sections
- G - Physics
- G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light; colorimetry; radiation pyrometry
- G01J 9/02 - Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength by interferometric methods
Patent holdings for IPC class G01J 9/02
Total number of patents in this class: 444
10-year publication summary
|
41
|
33
|
27
|
49
|
51
|
43
|
39
|
35
|
25
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ASML Netherlands B.V. | 6816 |
14 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
10 |
| Nikon Corporation | 7162 |
9 |
| The General Hospital Corporation | 4517 |
8 |
| Hamamatsu Photonics K.K. | 4161 |
8 |
| Carl Zeiss SMT GmbH | 2646 |
8 |
| Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences | 129 |
8 |
| ONERA (Office National d'Etudes et de Recherches Aerospatiales) | 83 |
7 |
| University Court of The University of ST Andrews | 305 |
6 |
| Cymer, LLC | 347 |
5 |
| Nippon Telegraph and Telephone Corporation | 14195 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
5 |
| Osaka University | 3143 |
5 |
| Aeva, Inc. | 266 |
5 |
| Korea Advanced Institute of Science and Technology | 3906 |
4 |
| Aston University | 132 |
4 |
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2362 |
4 |
| STMicroelectronics International N.V. | 1484 |
4 |
| Quantum Valley Ideas Laboratories | 65 |
4 |
| Rapid Phenotyping Pty Ltd | 25 |
4 |
| Other owners | 317 |