Skin-whitening agent
US9173902B2 · kind B2 · utility
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1References
2Claims
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Assignee
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Key dates
| Filing date | Mar 10, 2008 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Nov 12, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/92
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A skin-whitening agent offering an excellent whitening effect and being effective in preventing and treating age spots, freckles, etc., where such skin-whitening agent contains as its effective ingredient a whey protein hydrolyzate characterized by a molecular weight distribution of 10 kDa or less, main peak of 200 Da to 3 kDa, APL (average peptide-chain length) of 2 to 8, free amino acid content of 20% or less, and antigenicity of one-ten thousandth of β-lactoglobulin or less, as well as a cosmetic, drink or food, feed, pharmaceutical preparation or other skin-whitening product containing such skin-whitening agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.