- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 1/28 - Dyes with amino groups substituted by hydrocarbon radicals substituted by alkyl, aralkyl, or cyclo-alkyl groups
Patent holdings for IPC class C09B 1/28
Total number of patents in this class: 19
10-year publication summary
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3
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1
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1
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0
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3
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3
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1
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0
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0
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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
|
|---|---|---|
| Merck Patent GmbH | 5864 |
3 |
| Mitsubishi Chemical Corporation | 4465 |
3 |
| Nippon Kayaku Kabushiki Kaisha | 1429 |
3 |
| Mitsubishi Rayon Co., Ltd. | 941 |
2 |
| Pili | 14 |
2 |
| Amazon Technologies, Inc. | 25990 |
1 |
| Biostatus Limited | 27 |
1 |
| Ciba Holding Inc. | 177 |
1 |
| e Ink Corporation | 1434 |
1 |
| Liquavista B.V. | 29 |
1 |
| Sekisui Chemical Co., Ltd. | 3320 |
1 |
| Other owners | 0 |