Patents by Inventor Yoshitaka Owatari

Yoshitaka Owatari 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).

  • Vinyl chloride-grafted ethylene copolymer and process for producing same
    Patent number: 4748210
    Abstract: Vinyl chloride-grafted ethylene copolymer superior in adhesiveness both to metals, glasses or polar high molecular materials such as polyamides and to non-rigid vinyl chloride resins is provided in which backbone polymer is copolymer of ethylene, ester of monohydric alcohol of 1-8 carbon atoms with acrylic acid or methacrylic acid and maleic anhydride and pendant or grafting polymer is vinyl chloride polymer. This copolymer is produced by graft-polymerization of vinyl chloride onto the ethylene-acrylic or methacrylic ester-maleic anhydride copolymer.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: May 31, 1988
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Masahisa Okawa, Tomoyuki Emura, Yoshitaka Owatari, Kentaro Mashita, Toshio Kawakita