- All sections
- G - Physics
- G02B - Optical elements, systems or apparatus
- G02B 21/04 - Objectives involving mirrors
Patent holdings for IPC class G02B 21/04
Total number of patents in this class: 208
10-year publication summary
|
8
|
23
|
21
|
21
|
14
|
22
|
21
|
13
|
16
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 17833 |
16 |
| Beckman Coulter, Inc. | 1274 |
10 |
| Carl Zeiss Microscopy GmbH | 1203 |
10 |
| Evident Corporation | 1025 |
8 |
| Carl Zeiss SMT GmbH | 2978 |
6 |
| The Arizona Board of Regents on Behalf of the University of Arizona | 2157 |
6 |
| Leica Microsystems CMS GmbH | 1090 |
6 |
| Hamamatsu Photonics K.K. | 4417 |
5 |
| The Regents of the University of California | 19918 |
4 |
| Corning Incorporated | 10259 |
4 |
| Shimadzu Corporation | 6169 |
4 |
| Hamilton Thorne, Inc. | 20 |
4 |
| Centre National de La Recherche Scientifique | 10418 |
3 |
| Nikon Corporation | 7163 |
3 |
| Carl Zeiss AG | 886 |
3 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1535 |
3 |
| Howard Hughes Medical Institute | 229 |
3 |
| Nanolive SA | 20 |
3 |
| ASML Holding N.V. | 505 |
2 |
| Thermo Electron Scientific Instruments LLC | 191 |
2 |
| Other owners | 103 |