Color fading/discoloration preventive agent
US6752862B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23G2200/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed are a color fading/discoloration preventive agent containing as its active ingredient a coumarin analog represented by general formula (1) below, a glycoside of that analog, or a plant extract containing the coumarin analog or its glycoside: (wherein R1 represents a hydrogen atom, a hydroxyl group or a methoxy group, R2 represents a hydrogen atom or a hydroxyl group, and R1 and R2 are not both hydrogen atoms); anda color fading/discoloration preventive agent containing as its active ingredient a coumarin analog mixture obtained from the rind of citrus fruit, and particularly a coumarin analog mixture obtained from citrus cold press oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.