Patents by Inventor Mototaka Ohmura

Mototaka Ohmura 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).

  • Heat shrinkable polyvinyl chloride film
    Patent number: 4264010
    Abstract: A heat shrinkable polyvinyl chloride film which shrinks more than 60% in one direction or more than 80% as an area shrinkage is prepared by stretching a film comprising 5 to 20 wt. parts of a vinyl chloride-vinyl acetate type copolymer having a vinyl acetate content of 10 to 15 wt. % and an average polymerization degree of more than 700 and 100 wt. parts of polyvinyl chloride at a special high stretch ratio.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: April 28, 1981
    Assignee: Mitsubishi Plastics Industries, Ltd.
    Inventors: Norio Yoshiga, Hiroshi Nakamura, Mototaka Ohmura
  • Heat shrinkable polyvinyl chloride film with methyl methacrylate polymer additive
    Patent number: 4247663
    Abstract: A heat shrinkable polyvinyl chloride film which shrinks more than 60% in one direction or more than 75% as an area shrinkage is prepared by stretching a film comprising 5 to 25 wt. parts of a methyl methacrylate type copolymer and 100 wt. parts of polyvinyl chloride at a special high stretch ratio.
    Type: Grant
    Filed: February 14, 1979
    Date of Patent: January 27, 1981
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Norio Yoshiga, Hiroshi Nakamura, Mototaka Ohmura