Patents by Inventor Fusao Hanzawa

Fusao Hanzawa 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).

  • Modified polyester resin and hot-melt-adhesive conjugate fibers using the same
    Patent number: 5252397
    Abstract: Hot-melt-adhesive conjugate fibers consisting of a fiber-forming component and an adhesive component are provided, with at least one of the fiber-forming component and the adhesive component being a low-melting, modified polyester resin obtained by subjecting to polycondensation, a diol component consisting of 3 to 40 molar % of a 2,2-dialkyl-substituted-1,3-propanediol and 60 to 97 molar % of ethylene glycol and/or 1,4-butanediol, and an aromatic dicarboxylic acid, said low-melting, modified polyester resin having a melting point range between the melting point of polyethylene and a temperature at least 20.degree. C. lower than the melting point of highly crystalline polyethylene terephthalate.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: October 12, 1993
    Assignee: Chisso Corporation
    Inventors: Fusao Hanzawa, Takayoshi Nakajima, Masahiro Yokota, Kazuyoshi Kimura, Mamoru Fujita, Seiji Ide