- All sections
- G - Physics
- G02B - Optical elements, systems or apparatus
- G02B 21/33 - Immersion oils
Patent holdings for IPC class G02B 21/33
Total number of patents in this class: 279
10-year publication summary
|
20
|
30
|
24
|
19
|
41
|
33
|
33
|
25
|
11
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Carl Zeiss Microscopy GmbH | 1146 |
45 |
| Evident Corporation | 1072 |
27 |
| Leica Microsystems CMS GmbH | 1034 |
16 |
| Nikon Corporation | 7162 |
7 |
| Hamamatsu Photonics K.K. | 4161 |
7 |
| University of Washington | 2157 |
7 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
6 |
| Tsinghua University | 5426 |
6 |
| Carl Zeiss MicroImaging GmbH | 153 |
5 |
| Riken | 1669 |
5 |
| Damae Medical | 24 |
5 |
| 3m Innovative Properties Company | 18406 |
4 |
| The Regents of the University of California | 18943 |
4 |
| Centre National de La Recherche Scientifique | 9632 |
4 |
| Molecular Devices, LLC | 227 |
4 |
| Carl Zeiss AG | 855 |
3 |
| Carl Zeiss SMT GmbH | 2646 |
3 |
| The Arizona Board of Regents on Behalf of the University of Arizona | 1906 |
3 |
| European Molecular Biology Laboratory | 295 |
3 |
| Howard Hughes Medical Institute | 202 |
3 |
| Other owners | 112 |