Patents by Inventor Atsuko Yoshihara

Atsuko Yoshihara 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).

  • Two pack type curable composition comprising epoxy resin and silicon-containing elastomeric polymer
    Patent number: 5500464
    Abstract: A two-pack type curable composition comprising:A. a first liquid containing an organic elastomeric polymer having at least one silicon-containing reactive group in a molecule and a curing agent for an epoxy resin, andB. a second liquid containing an epoxy resin, at least one organic tin compound selected from the group consisting of compounds of the formulae: ##STR1## wherein R.sup.1 is a monovalent hydrocarbon group, and R.sup.2 is a monovalent aliphatic hydrocarbon group having 7 to 19 carbon atoms, and an inorganic filler, which composition has good storage stability.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: March 19, 1996
    Assignee: Kanegafuchi Chemical Industry Co., Ltd.
    Inventors: Michihide Homma, Atsuko Yoshihara, Hiroshi Wakabayashi, Katsuhiko Isayama
  • Two pack type curable composition comprising epoxy resin and silicon-containing elastomeric polymer
    Patent number: 5336703
    Abstract: A two-pack type curable composition comprising:A. a first composition containing (A-1) an organic elastomeric polymer having at least one silicon-containing group to the silicon atom of which a hydroxyl group and/or a hydrolyzable group are bonded and which is cross linkable through formation of a siloxane linkage in a molecule and (A-2) a curing agent for an epoxy resin, andB. a second composition containing (B-1) an epoxy resin, (B-2) a curing catalyst for the organic elastomeric polymer having at least one silicon-containing reactive group and (B-3) at least one member selected from the group consisting of acidic fillers and carboxylic acids, which has good storage stability.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: August 9, 1994
    Assignee: Kanegafuchi Chemical Industry Co., Ltd.
    Inventors: Michihide Homma, Atsuko Yoshihara, Hiroshi Wakabayashi, Katsuhiko Isayama
  • Adhesion method
    Patent number: 4981728
    Abstract: A cured material of a curable composition comprising (1) an organic elastomeric polymer having at least one silicon-containing group to the silicon atom of which a hydroxyl group and/or a hydrolyzable group are bonded and which is cross linkable through formation of a siloxane linkage in a molecule, (2) an epoxy resin, (3) a curing agent for the epoxy resin and (4) a curing catalyst for the organic elastomeric polymer is firmly adhered to a substrate when a vinyl type polymer having at least one silicon-containing group to the silicon atom of which a hydroxyl group and/or a hydrolyzable group are bonded and which is cross linkable through formation of a siloxane linkage is coated on a substrate before application of the curable composition.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: January 1, 1991
    Assignee: Kanegafuchi Chemical Industry Co., Ltd.
    Inventors: Michihide Homma, Atsuko Yoshihara, Hiroshi Wakabayashi, Katsuhiko Isayama