- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 35/21 - Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl- or triaryl-alkane or -alkene of diarylmethane or triarylmethane
Patent holdings for IPC class C09B 35/21
Total number of patents in this class: 8
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
|
|---|---|---|
| Clariant Finance (BVI) Limited | 386 |
5 |
| Clariant International Ltd. | 932 |
2 |
| Archroma IP GmbH | 461 |
1 |
| Other owners | 0 |