Patents by Inventor Ryuso Yamaoka

Ryuso Yamaoka 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).

  • Laminate film
    Patent number: 5616420
    Abstract: Disclosed are a laminate film having at least three layers, the three layers being (A) an intermediate layer and (B) two outer layers, the intermediate layer (A) being composed of a resin composition comprising 20 to 100% by weight of an amorphous polyolefin containing at least 50% by weight of a propylene and/or butene-1 and 80 to 0% by weight of a crystalline polypropylene, and the two outer layers (B) being composed of a resin composition comprising a polyolefin and a thermoplastic styrene elastomer, and a laminate film having at least three layers, the three layers being (A) an intermediate layer and (B) two outer layers, the intermediate layer (A) being composed of a resin composition comprising 20 to 100% by weight of an amorphous polyolefin containing at least 50% by weight of a propylene and/or butene-1 and 80 to 0% by weight of a crystalline polypropylene, and the two outer layers (B) being composed of a resin composition comprising a propylene resin and a thermoplastic styrene elastomer.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: April 1, 1997
    Assignees: Gunze Limited, Ube Industries, Ltd.
    Inventors: Ryuso Yamaoka, Yoshinori Ishii, Kunio Kondo, Kazuto Wakita, Iwao Tsurutani