- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 31/072 - Naphthols containing acid groups, e.g. —COOH, —SO3H, —PO3H2, —OSO3H, —OPO2H2Salts thereof
Patent holdings for IPC class C09B 31/072
Total number of patents in this class: 31
10-year publication summary
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1
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2
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1
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0
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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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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Kayaku Kabushiki Kaisha | 1469 |
8 |
| Polatechno Co., Ltd. | 110 |
7 |
| Nitto Denko Corporation | 8468 |
5 |
| The Procter & Gamble Company | 21900 |
4 |
| Milliken & Company | 1147 |
4 |
| Mitsubishi Chemical Corporation | 4677 |
1 |
| Ecole Superieure des Industries du Textile et de L'habillement (esith) | 10 |
1 |
| Peridot Print LLC | 1310 |
1 |
| Other owners | 0 |