Patents by Inventor Hirofumi Yokota

Hirofumi Yokota 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).

  • Production process of guanidine derivative containing amido group and salt thereof
    Publication number: 20040092599
    Abstract: A guanidine derivative containing an amido group, represented by 1
    Type: Application
    Filed: May 8, 2002
    Publication date: May 13, 2004
    Applicant: Ajinomoto Co., Inc.
    Inventors: Ryosuke Yumioka, Hirofumi Yokota, Hiroshi Matsui, Yukiko Mori, Yoshimi Kikuchi, Norimasa Onishi
  • Cosmetic compositions
    Publication number: 20040052747
    Abstract: A cosmetic composition which comprises one or more kinds of mono-N&agr;-long-chain acylarginines and/or one or more kinds of powders selected from powders subjected to a surface treatment with a mono-N&agr;-long-chain acylarginine and (B) a silicone compound for cosmetics and/or an amphoteric surfactant and is preferably applied to hair or skin. The composition has a feature of imparting gloss and elasticity to hair and skin, whilst little sliminess to skin and scalp during rinsing and little tackiness after drying.
    Type: Application
    Filed: March 27, 2003
    Publication date: March 18, 2004
    Inventors: Naoko Mikami, Hirofumi Yokota, Eiko Oshimura
  • Method for preparing N-long chain acyl neutral amino acid
    Patent number: 6703517
    Abstract: A method for preparing a highly purified N-long chain acyl neutral amino acid for use of a detergent and the like in a simple and convenient manner and in a high yield by reacting a neutral amino acid such as glycine, &ggr;-aminobutyric acid, and alanine, with a saturated or unsaturated fatty acid halide having 8 to 22 carbon atoms, wherein the reaction is performed in a mixture of water and one or more kinds of hydrophilic organic solvents selected from the group consisting of acetone, acetonitrile, a secondary alcohol having 3 or 4 carbon atoms, and a tertiary alcohol having 4 carbon atoms such as isopropanol, sec-butanol, and tert-butanol in the presence of a base.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: March 9, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Tatsuya Hattori, Nobuyoshi Kitamura, Naoya Yamato, Hirofumi Yokota
  • Bactericide, antiseptic, dermally applicable composition, washing composition, antibacterial fiber aggregate, method for eradicating a microorganism, and method for inhibiting the proliferation of a microorgamism
    Publication number: 20030162838
    Abstract: A bactericide and an anticeptic comprises at least an amide group-containing guanidine derivative represented by General Formula (I) or a salt thereof: 1
    Type: Application
    Filed: August 7, 2002
    Publication date: August 28, 2003
    Applicant: Ajinomoto Co., Inc.
    Inventors: Ryosuke Yumioka, Noriyuki Nakanishi, Hirofumi Yokota
  • Method for preparing N-long chain acyl neutral amino acid
    Publication number: 20030125227
    Abstract: A method for preparing a highly purified N-long chain acyl neutral amino acid for use of a detergent and the like in a simple and convenient manner and in a high yield by reacting a neutral amino acid such as glycine, &ggr;-aminobutyric acid, and alanine, with a saturated or unsaturated fatty acid halide having 8 to 22 carbon atoms, wherein the reaction is performed in a mixture of water and one or more kinds of hydrophilic organic solvents selected from the group consisting of acetone, acetonitrile, a secondary alcohol having 3 or 4 carbon atoms, and a tertiary alcohol having 4 carbon atoms such as isopropanol, sec-butanol, and tert-butanol in the presence of a base.
    Type: Application
    Filed: November 22, 2002
    Publication date: July 3, 2003
    Applicant: AJINOMOTO CO. INC.
    Inventors: Tatsuya Hattori, Nobuyoshi Kitamura, Naoya Yamato, Hirofumi Yokota
  • Hair cosmetic
    Publication number: 20030108508
    Abstract: One or more components A selected from amide group-containing guanidine derivatives of the following general formula (I), 1
    Type: Application
    Filed: August 13, 2002
    Publication date: June 12, 2003
    Applicant: AJINOMOTO CO., INC
    Inventors: Ryosuke Yumioka, Hirofumi Yokota
  • Surface modifier for inorganic substances
    Patent number: 4640943
    Abstract: An inorganic composition of improved characteristics comprising at least one particulate inorganic substance whose surface is modified by an N-acylated basic amino acid.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: February 3, 1987
    Assignee: Ajinomoto Co., Inc.
    Inventors: Kenjiro Meguro, Koichiro Sagawa, Hirofumi Yokota, Masahiro Takehara