Patents by Inventor Takuo Ishihara

Takuo Ishihara 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 producing friction material
    Patent number: 5573579
    Abstract: A method for producing friction material free of pill having at least 2 mm in shorter diameter comprising mixing dispersion medium and friction base comprising carbon fiber having weighted mean fiber length of at least 0.3 mm, binder and friction modifier to form a dispersion ranging in a solid content concentration of 0.5 to 50% by weight, filtering the dispersion, drying a filter cake and forming the cake.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: November 12, 1996
    Assignee: Osaka Gas Company, Ltd.
    Inventors: Keita Nakanishi, Takuo Ishihara