Dimeric azo pyridone colorants
US6646111B1 · kind B1 · utility
98Cited by
31References
33Claims
0Family size
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Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Nov 20, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S534/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are compounds of the formula The compounds are useful as colorants, particularly in applications such as phase change inks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.