Patents by Inventor Kana Takaichi

Kana Takaichi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Retinol-modified collagen, method for producing same, and external composition for skin containing same
    Patent number: 9238688
    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.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: January 19, 2016
    Assignees: NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND TECHNOLOGY, SUNSTAR INC.
    Inventors: Masao Tanihara, Kana Takaichi, Mariko Maeda, Tsukasa Mitsui, Kazushi Yamamoto, Akiko Hirano
  • RETINOL-MODIFIED COLLAGEN, METHOD FOR PRODUCING SAME, AND EXTERNAL COMPOSITION FOR SKIN CONTAINING SAME
    Publication number: 20130116189
    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.
    Type: Application
    Filed: June 15, 2011
    Publication date: May 9, 2013
    Inventors: Masao Tanihara, Kana Takaichi, Mariko Maeda, Tsukasa Mitsui, Kazushi Yamamoto, Akiko Hirano