- All sections
- G - Physics
- G03C - Photosensitive materials for photographic purposes; photographic processes, e.g. cine, x-ray, colour or stereo-photographic processes; auxiliary processes in photography
- G03C 1/685 - Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances
Patent holdings for IPC class G03C 1/685
Total number of patents in this class: 27
10-year publication summary
|
7
|
0
|
3
|
2
|
0
|
1
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Transitions Optical, Inc. | 280 |
5 |
| PPG Industries Ohio, Inc. | 3449 |
3 |
| FUJIFILM Corporation | 28805 |
2 |
| Essilor International (compagnie Generale D'optique) | 2956 |
2 |
| Korea University Research and Business Foundation | 2809 |
2 |
| OpCo GmbH | 3 |
2 |
| Hewlett-Packard Development Company, L.P. | 27461 |
1 |
| Alphamicron Incorporated | 79 |
1 |
| Chromatic Technologies, Inc. | 74 |
1 |
| Ciba Holding Inc. | 177 |
1 |
| Domino UK Limited | 34 |
1 |
| FUJIFILM Hunt Chemicals U.S.A., Inc. | 20 |
1 |
| James Robinson Limited | 1 |
1 |
| Tokuyama Corporation | 1342 |
1 |
| Transitions Optical Limited | 153 |
1 |
| BRAND, Karl-Heinz | 1 |
1 |
| KULARTZ, Bernd | 1 |
1 |
| Other owners | 0 |