Patents by Inventor Nobuyuki Tohyama

Nobuyuki Tohyama 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).

  • Vulcanized fiber sheet having a serrated cutting edge, a carton having said sheet adhered thereto, and a method of adhesion thereof
    Patent number: 6173876
    Abstract: The present invention is a sheet having a serrated cutting edge attached to a carton case containing a roll of a cooking sheet such as a synthetic resin film, paper sheet and metallic foil, the sheet having a serrated cutting edge used for cutting the cooking sheet. The sheet having a serrated cutting edge is made of a vulcanized fiber. A moisture-proof film of a synthetic resin is formed on the two surfaces of a vulcanized fiber blank in order to make the most of the rigidity and elasticity which are advantages of the vulcanized fiber and decreases moisture absorption which is a disadvantage thereof. The invention also is a carton to which the sheet having a serrated cutting edge is adhered to as well as to a method of adhering the sheet having a serrated cutting edge to the carton by utilizing the moisture-proof film and ultrasonic adhesion.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: January 16, 2001
    Assignee: Oji Paper Co., Ltd.
    Inventors: Mitsuhiro Sano, Nobuo Wakabayashi, Hiroaki Mikamo, Keiichi Ikeda, Isao Shoji, Shiro Nagasawa, Nobuyuki Tohyama