- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 56/04 - Stilbene-azo dyes
Patent holdings for IPC class C09B 56/04
Total number of patents in this class: 14
10-year publication summary
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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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0
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0
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0
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2
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Kayaku Kabushiki Kaisha | 1435 |
5 |
| Polatechno Co., Ltd. | 110 |
5 |
| Mitsubishi Chemical Corporation | 4525 |
1 |
| Zhejiang Keyong Chemical Co., Ltd. | 16 |
1 |
| Zhejiang Longsheng Group Co., Ltd. | 3 |
1 |
| Shanghai Kehua Dyestuff Industry Co., Ltd. | 10 |
1 |
| Other owners | 0 |