Patents by Inventor Tsuneo Yasumura

Tsuneo Yasumura 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).

  • Polymer emulsion and process for preparing the same
    Patent number: 6359032
    Abstract: The present invention provides a polymer emulsion which contains polymer particles having an average particle size of not more than 30 &mgr;m and having core-parts and shell-parts; which is composed of chitosan (a) and a polymer (b) of organic acids having a reactive vinyl group or a salt thereof, as constituent component of shell-part, and composed of a polymer (c) of hydrophobic monomers, as constituent component of core-part. Further, the present invention provides a coloring agent particle comprising a polymer particle in the above-mentioned polymer emulsion; and wherein a coloring material (k) is present in the shell-part and/or core-part. Furthermore, the present invention provides a deodorizing fiber wherein a polymer particle in the above-mentioned polymer emulsion is present on the surface of the fiber.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: March 19, 2002
    Assignee: Kao Corporation
    Inventors: Kazuo Kuwahara, Yoshihiro Hasebe, Akira Akaogi, Tsuneo Yasumura, Toshie Takahashi, Osamu Tachizawa, Eiji Terada
  • Polymer emulsion and process for preparing the same
    Publication number: 20010053803
    Abstract: The present invention provides a polymer emulsion which contains polymer particles having an average particle size of not more than 30 &mgr;m and having core-parts and shell-parts; which is composed of chitosan (a) and a polymer (b) of organic acids having a reactive vinyl group or a salt thereof, as constituent component of shell-part, and composed of a polymer (c) of hydrophobic monomers, as constituent component of core-part.
    Type: Application
    Filed: January 9, 2001
    Publication date: December 20, 2001
    Applicant: KAO CORPORATION
    Inventors: Kazuo Kuwahara, Yoshihiro Hasebe, Akira Akaogi, Tsuneo Yasumura, Toshie Takahashi, Osamu Tachizawa, Eiji Terada
  • Polymer emulsion and process for producing the same
    Patent number: 6252003
    Abstract: The present invention provides a polymer emulsion which contains polymer particles having an average particle size of not more than 30 &mgr;m and having core-parts and shell-parts; which is composed of chitosan (a) and a polymer (b) of organic acids having a reactive vinyl group or a salt thereof, as constituent component of shell-part, and composed of a polymer (c) of hydrophobic monomers, as constituent component of core-part. Further, the present invention provides a coloring agent particle comprising a polymer particle in the above-mentioned polymer emulsion; and wherein a coloring material (k) is present in the shell-part and/or core-part. Furthermore, the present invention provides a deodorizing fiber wherein a polymer particle in the above-mentioned polymer emulsion is present on the surface of the fiber.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: June 26, 2001
    Assignee: Kao Corporation
    Inventors: Kazuo Kuwahara, Yoshihiro Hasebe, Akira Akaogi, Tsuneo Yasumura, Toshie Takahashi, Osamu Tachizawa, Eiji Terada
  • Sizing method
    Patent number: 5061525
    Abstract: A cheese of fiber can be effectively sized with an aqueous emulsion of a cationic polymer, containing 0.2 to 20 g/l of a water-soluble salt, at 30.degree. to 80.degree. C. The polymer preferably includes a copolymer of a vinyl monomer and an unsaturated carboxylic acid on a cationic polymer.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: October 29, 1991
    Assignee: Kao Corporation
    Inventors: Yuichi Takahashi, Tsuneo Yasumura, Yasuo Ishii