Patents by Inventor Sumio Ogihara

Sumio Ogihara 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).

  • Plastic film packaging material
    Patent number: 4840823
    Abstract: The present invention provides a plastic film packaging material comprising 100 weight parts of a polyethylene resin and 5 to 100 weight parts of an additive comprising a silica containing naturally porous material which is hydrophillic and which has a pore diameter of 15-200A, a specific surface area of 110 to 130 m.sup.2 /g, voids of 40 to 50% and a specific gravity of about 1.2.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: June 20, 1989
    Assignees: Kabushiki Kaisha Frontier, Nippon Unicar Kabushiki Kaisha, Nittetsu Kougyo Kabushiki Kaisha
    Inventors: Makoto Chigami, Sumio Ogihara, Hiroshi Hoaki, Tomonobu Kondo, Masao Okamura