Patents by Inventor Yasuhiro Doi

Yasuhiro Doi 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).

  • Detergent composition
    Patent number: 5858936
    Abstract: Described is a detergent composition comprising (A) a sulfate ester surfactant, (B) at least one surfactant selected from amphoteric surfactants, amine oxide surfactants, alkanol amide surfactants and amide amino-acid surfactants, (C) a cationic bactericide and (D) a metal chelating agent, the weight ratio of said (A) to (B) being 1-50 and the content of said (C) being 0.2 wt. % to 5 wt. %.The detergent composition according to the present invention has excellent detergency, foamability and foam durability and at the same time, has high bactericidal effects because it can be mixed stably with a cationic bactericide.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: January 12, 1999
    Assignee: Kao Corporation
    Inventors: Yoshinori Tamura, Yasuhiro Doi, Keiko Hasebe, Masafumi Shonaka, Tadashi Moriyama, Yuichi Hioki, Hiroshi Sonohara
  • Bath additive composition comprising aluminum salt and carbonate or bicarbonate which yields a bath water of pH 8 to 9
    Patent number: 5411731
    Abstract: A bath additive composition comprises an aluminum salt and a carbonate and makes the pH of bath water 8 or higher but less than 9 when the bath additive composition is dissolved in the bath water. The bath additive composition does not damage bathtubs, bath water heating devices, or the skin of users, provides a refreshing feel to the skin after bathing, and has an excellent ability of suppressing perspiration.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: May 2, 1995
    Assignee: Kao Corporation
    Inventors: Norihiro Tanaka, Kazuyuki Okui, Yasuhiro Doi, Hirotaka Sato, Hidenori Yorozu
  • Soluble aluminum carboxylate bathing preparation
    Patent number: 5389678
    Abstract: Bathing preparations comprising a soluble aluminum carboxylate exhibit excellent dissolvability into bath water, and give a refreshing sensation to users during bathing and after bathing.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: February 14, 1995
    Assignee: Kao Corporation
    Inventors: Hidenori Yorozu, Hirotaka Sato, Yasuhiro Doi
  • Bathing preparation
    Patent number: 5310758
    Abstract: Bathing preparations comprising a soluble aluminum carboxylate exhibit excellent dissolvability into bath water.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: May 10, 1994
    Assignee: Kao Corporation
    Inventors: Hidenori Yorozu, Hirotaka Sato, Yasuhiro Doi
  • Sorter
    Patent number: 4548403
    Abstract: The invention relates to a sorter of the type in which a distributor moves relative to a plurality of bins arranged fixedly along the inlets of bins to thereby distribute sheets into the bins individually, and is constituted by a pair of belts for transporting the sheet received from the copying machine toward the distributor and a tensioner for tensing the belts. Another arrangement of the invention has a device for preventing the movement of the distributor in both forward and reverse direction while the distributor is at a stop. Further another arrangement of the sorter includes structure for successfully guiding the leading edge of the sheet into a pair of rollers provided the distributor.
    Type: Grant
    Filed: November 17, 1982
    Date of Patent: October 22, 1985
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Toshio Matsui, Yasuhiro Doi, Keichi Kinoshita, Kuniaki Ishiguro