- All sections
- G - Physics
- G01B - Measuring length, thickness or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring irregularities of surfaces or contours
- G01B 9/02091 - Tomographic interferometers, e.g. based on optical coherence
Patent holdings for IPC class G01B 9/02091
Total number of patents in this class: 479
10-year publication summary
|
0
|
4
|
6
|
17
|
33
|
68
|
85
|
76
|
104
|
40
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The General Hospital Corporation | 4715 |
20 |
| NEC Corporation | 35509 |
11 |
| Acucela Inc. | 159 |
10 |
| Kineolabs, Inc. | 18 |
10 |
| Precitec Optronik GmbH | 76 |
9 |
| Canon U.S.A., Inc. | 529 |
8 |
| Ecole Superieure de Physique et de Chimie Industrielles de La Ville de Paris | 350 |
8 |
| Heidelberg Engineering GmbH | 63 |
8 |
| Leica Microsystems CMS GmbH | 1082 |
8 |
| Leica Microsystems Inc. | 23 |
8 |
| Topcon Corporation | 1069 |
8 |
| Centre National de La Recherche Scientifique | 10408 |
7 |
| Alcon, Inc. | 5405 |
7 |
| Carl Zeiss Meditec, Inc. | 285 |
7 |
| NinePoint Medical, Inc. | 34 |
6 |
| Lessmüller Lasertechnik GmbH | 11 |
6 |
| The Regents of the University of California | 19857 |
5 |
| Hamamatsu Photonics K.K. | 4403 |
5 |
| Duke University | 3065 |
5 |
| Carl Zeiss Meditec AG | 1609 |
5 |
| Other owners | 318 |