Patents by Inventor Kiyoshi Kuroyanagi

Kiyoshi Kuroyanagi 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).

  • Tip member for coating tool
    Patent number: 4749618
    Abstract: A tip member for a coating tool in the form of a stick, wherein the stick is formed of a bundle of resin-treated fibers substantially uniformly stretched in the longitudinal direction of the fibers. One end of the stick is tapered to the tip with the fibers being unraveled to unbind the fibers in that area. One or more longitudinal grooves may be formed in the surface of the stick.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: June 7, 1988
    Assignees: Pilot Ink Co., Ltd., Kabushiki Kaisha Fujiko
    Inventors: Keizo Kawaguchi, Kiyoshi Kuroyanagi, Gengo Shinada, Yasutaka Shinguu