Patents by Inventor Yujiro Uchiyama

Yujiro Uchiyama 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).

  • Cationic polymer thickener and process for preparing the same
    Patent number: 5608021
    Abstract: Cationic thickener prepared by polymerizing a monomer composition comprising 15 to 85% by weight of at least one of acrylic monomer having an amino group and methacrylic monomer having an amino group, 20 to 80% by weight of vinyl monomer, 1 to 20% by weight of monomer having at least one of acryloyl group and methacryloyl group and 0.1 to 20% by weight of crosslinkable vinyl monomer, and a process for preparing the same. This cationic thickener contains little impurities, and can be easily mixed with a cationic polymer for setting, and forms a flexible film after drying.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: March 4, 1997
    Assignee: Osaka Yuki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yujiro Uchiyama, Junichi Matsumoto, Yoshihiro Okuda
  • Cosmetic composition comprising cationic polymer thickener
    Patent number: 5603926
    Abstract: Cosmetic composition comprising cationic thickener prepared in a nonaqueous system in the absence of a surface active agent by polymerizing monomer composition containing 15 to 90% by weight of at least one of acrylic monomer having amino group and methacrylic monomer having amino group, 0 to 80% by weight of vinyl monomer, 1 to 60% by weight of monomer having at least one of acryloyl group and methacryloyl group and 0.1 to 25% by weight of crosslinkable vinyl monomer. This cosmetic composition imparts refreshing feeling and little skin irritation and can be suitably used as hair cream, hair lotion and the like.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: February 18, 1997
    Assignees: Osaka Yuki Kagaku Kogyo Kabushiki Kaisha, Shiseido Company, Limited
    Inventors: Junichi Matsumoto, Yujiro Uchiyama, Tetsuya Kambe, Tomiyuki Nanba, Yoshihiro Okuda
  • Dental adhesive coating base composition and oral composition
    Patent number: 5489625
    Abstract: A dental adhesive coating base composition comprising a copolymer represented by formula (I) or (II) in an amount of from 5 to 40 wt % based on the total amounts of the composition; and an oral composition comprising at least one of a copolymer represented by formula (I) and a copolymer represented by formula (II) in an amount of from 5 to 40 wt % based on the total amount of the composition, at least one of a phosphoric acid and tartaric acid present in an amount effective to increase the solubility of fluoride in the composition, up to an amount of 6 wt % or less based on the total amount of the composition; a fluorine-containing compound in an amount effective for dental caries prevention; and a volatile nonaqueous solvent are disclosed: ##STR1## wherein R.sup.11 represents an alkyl group having from 1 to 10 carbon atoms; R.sup.12 represents a lower alkyl group having from 1 to 2 carbon atoms, provided that three R.sup.12 groups must be the same; R.sup.13, R.sup.14, R.sup.15, R.sup.16 and R.sup.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: February 6, 1996
    Assignees: Sunstar Kabushiki Kaisha, Osaka Organic Chemical Industries Co., Ltd.
    Inventors: Yutaka Moriwaki, Yujiro Uchiyama, Akio Tani, Shigeaki Matsumoto, Hiroshi Furumichi, Takao Makishima, Kiyoshi Maekawa