- All sections
- G - Physics
- G03C - Photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour or stereo-photographic processesauxiliary 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: 25
10-year publication summary
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0
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3
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2
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0
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1
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0
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0
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0
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0
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2
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| PPG Industries Ohio, Inc. | 3326 |
3 |
| Transitions Optical, Inc. | 235 |
3 |
| FUJIFILM Corporation | 30562 |
2 |
| Essilor International (compagnie Generale D'optique) | 2996 |
2 |
| Intercos S.p.A. | 64 |
2 |
| Korea University Research and Business Foundation | 3278 |
2 |
| OpCo GmbH | 3 |
2 |
| Alphamicron Incorporated | 92 |
1 |
| Chromatic Technologies, Inc. | 72 |
1 |
| Domino UK Limited | 37 |
1 |
| FUJIFILM Hunt Chemicals U.S.A., Inc. | 18 |
1 |
| James Robinson Limited | 1 |
1 |
| Tokuyama Corporation | 1482 |
1 |
| Transitions Optical Limited | 174 |
1 |
| BRAND, Karl-Heinz | 1 |
1 |
| KULARTZ, Bernd | 1 |
1 |
| Other owners | 0 |