US 5,670,154 AGranted

Reducing tyrosinase activity

AssigneeMitsui Norin Co., Ltd.

InventorsYukihiko Hara, Miwa Honda

Life of this patent

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Abstract

A tyrosinase inhibiting agent acts specifically on tyrosinase to inhibit it; the effective component of this action being an inhibitor of tyrosinase consisting of tea polyphenols.

Claims6

Dependent claims

A method of reducing tyrosinase activity in human skin comprising topically administering to a human an effective tyrosinase activity reducing amount of at least one tea polyphenol selected from the group consisting of epigallocatechin gallate, epicatechin gallate and epigallocatechin.

Dependencies are inferred from the claim text.

Facts

Application: 08/349,477Filed 2 Dec 1994 · continuation
Priority: 10 Jan 1994
Granted: 23 Sep 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

A61K 8/498
With oxygen as the only hetero atom: having 6-membered rings or their condensed derivatives, e.g. coumarin
A61Q 19/02
Preparations for care of the skin: for chemically bleaching or whitening the skin
A61K 2800/782
Enzyme modulators, e.g. Enzyme agonists: enzyme inhibitors; Enzyme antagonists
A61K
Medicines and medical preparations

Family

Serial179,582Parent of this continuation · filed 10 Jan 1994
US 5,670,154 AThis patent

From the US filing history. Foreign family members aren’t listed.

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