- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 31/20 - Trisazo dyes from a coupling component "D" containing a directive hydroxy group
Patent holdings for IPC class C09B 31/20
Total number of patents in this class: 17
10-year publication summary
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4
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0
|
1
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4
|
1
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1
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0
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0
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0
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1
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Kayaku Kabushiki Kaisha | 1471 |
6 |
| FUJIFILM Corporation | 30689 |
3 |
| Polatechno Co., Ltd. | 107 |
3 |
| Merck Patent GmbH | 5747 |
1 |
| Mitsubishi Chemical Corporation | 4746 |
1 |
| Kemira Oyj | 1262 |
1 |
| The Regents of the University of Colorado, a body corporate | 2846 |
1 |
| Chromascape, LLC | 44 |
1 |
| Other owners | 0 |