Patents by Inventor Tohru Chikata

Tohru Chikata 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).

  • Method for examining quality of adhesion in vulcanized rubber-adhesively bonded metal part
    Patent number: 4970901
    Abstract: In a method for examining the quality of adhesion in a vulcanized rubber-adhesively bonded metal part made by adhesively bonding a rubber member to a metal with an adhesive for rubber applied thereon in a vulcanization-forming or molding, a small rubber test piece is previously vulcanization-formed or molded together with the rubber member onto a portion of the metal surface other than the bonded joint of the rubber member, and the small rubber test piece is teared off from the metal surface, thereby discriminating the part whether the adhesion is good or bad.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: November 20, 1990
    Assignee: Arai Seisakusho Co., Ltd.
    Inventors: Susumu Takeya, Tohru Chikata