- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 35/025 - Disazo dyes characterised by two coupling components of the same type in which the coupling component is an amine or polyamine
Patent holdings for IPC class C09B 35/025
Total number of patents in this class: 7
10-year publication summary
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Display Co., Ltd. | 39154 |
1 |
| Seiko Epson Corporation | 20528 |
1 |
| Sumitomo Chemical Company, Limited | 8989 |
1 |
| DONGWOO FINE-CHEM Co., Ltd. | 1453 |
1 |
| Kemira Oyj | 1265 |
1 |
| Rex-Tone Industries Ltd | 4 |
1 |
| Sumika Technology Co., Ltd. | 4 |
1 |
| Other owners | 0 |