- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 13/04 - Oxyketone dyes of the pyrene series
Patent holdings for IPC class C09B 13/04
Total number of patents in this class: 5
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 20967 |
1 |
| Essilor International (compagnie Generale D'optique) | 2989 |
1 |
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1784 |
1 |
| BASF (China) Co., Ltd. | 845 |
1 |
| Centre National de La Recherche Scientifique (cnrs) | 3105 |
1 |
| Other owners | 0 |