Patents by Inventor Michihiro Yamaguchi

Michihiro Yamaguchi 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).

  • Transparent composition
    Patent number: 5162377
    Abstract: A transparent composition containing a phospholipid, at least one cationic or nonionic surfactant, an oily component, and water.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: November 10, 1992
    Assignee: Shiseido Company, Ltd.
    Inventors: Hiroyuki Kakoki, Shoji Nishiyama, Michihiro Yamaguchi, Yoshimaru Kumano
  • Packing material for liquid chromatography
    Patent number: 5145578
    Abstract: A packing material for liquid chromatography, comprising a spherical clay mineral powder which comprises a naturally occurring or synthetic water-swellable clay mineral, a clay mineral having foreign cations substantially substituted for interlayer ions inherently present in the naturally occurring or synthetic water-swellable clay mineral, or a calcined product thereof.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: September 8, 1992
    Assignee: Shiseido Company Ltd.
    Inventors: Kazo Tokubo, Michihiro Yamaguchi, Yutaka Ohtsu, Kiyoshi Nakamura, Satoshi Matsumoto, Akihiko Yamagishi
  • Cosmetic containing fine soft microcapsules
    Patent number: 5089269
    Abstract: A cosmetic composition on an external treatment agent containing microcapsules, with an average particle size of 0.1 to 2000 .mu.m, enclosing a hydrophobic component, wherein the microcapsules are composed of a gelatin film swollen with water.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: February 18, 1992
    Assignee: Shiseido Company Ltd.
    Inventors: Akira Noda, Michihiro Yamaguchi, Masanori Aizawa, Yoshimaru Kumano
  • Water-in-oil emulsion type cosmetics
    Patent number: 5015469
    Abstract: A water-in-oil type emulsified composition containing a water-swellable clay mineral, a nonionic surfactant, an oil component, and water as the essential constituents or containing a water-swellable clay mineral, a quaternary ammonium salt type cationic surfactant, one or two more kinds of polyoxyalkylene modified organopolysiloxane, an aqueous phase, and an oil phase containing one or two or more kinds of organic silicone resin comprising the units of the formula:RnSiO.sub.(4-n)/2wherein R is a hydrocarbon group having 1 to 6 carbon atoms or a phenyl group, and n represents a value of 1.0 to 1.8, and a water- and polyhydric alcohol-in-oil type emulsified composition containing an oil phase containing a polyoxyalkylene modified organopolysiloxane, a water-swellable clay mineral, a quaternary ammonium salt type cationic surfactant and a silicone oil, water, and a polyhydric alcohol.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: May 14, 1991
    Assignee: Shideido Company Ltd.
    Inventors: Toshio Yoneyama, Michihiro Yamaguchi, Shinji Tobe, Tomiyuki Nanba, Masaaki Ishiwatari, Hidekazu Toyoda, Shin Nakamura, Yoshimaru Kumano, Sadaki Takata, Hiromi Ito