The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 2016
Filed:
Jun. 15, 2011
Masao Tanihara, Ikoma, JP;
Kana Takaichi, Takatsuki, JP;
Mariko Maeda, Takatsuki, JP;
Tsukasa Mitsui, Takatsuki, JP;
Kazushi Yamamoto, Takatsuki, JP;
Akiko Hirano, Takatsuki, JP;
Masao Tanihara, Ikoma, JP;
Kana Takaichi, Takatsuki, JP;
Mariko Maeda, Takatsuki, JP;
Tsukasa Mitsui, Takatsuki, JP;
Kazushi Yamamoto, Takatsuki, JP;
Akiko Hirano, Takatsuki, JP;
NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND TECHNOLOGY, Nara, JP;
SUNSTAR INC., Osaka, JP;
Abstract
Disclosed is a compound which exhibits a higher effect of preventing wrinkle formation, a higher effect of improving wrinkles, a higher effect of making the skin beautiful, and a higher effect of improving skin quality than conventional retinol and retinol derivatives in a sustained manner. Further disclosed are a method for producing the same, and an external composition for the skin and a sheet-shaped cosmetic each containing the same as an active ingredient. More specifically disclosed are retinol-modified collagen in which a dicarboxylic acid is attached to at least one hydroxyl group of collagen and retinol is attached to a carboxyl group of at least one attached dicarboxylic acid, a method for producing the same, and an external composition for the skin and a sheet-shaped cosmetic each containing the same as an active ingredient.