Patents by Inventor Makoto Shiono

Makoto Shiono 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).

  • Oil ring assembly
    Patent number: 5161805
    Abstract: In a method of manufacturing a side rail of a compound steel oil ring assembly in which a linear, strip-like wire material is passed between a plurality of pins and bent into an annular shape, a side of the side rail that will become the inner circumferential side thereof is brought into pressured contact with at least one pin formed to have a corrugated surface, thereby forming corrugations in the side of the side rail that will become the inner circumferential side thereof.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: November 10, 1992
    Assignee: Kabushiki Kaisha Riken
    Inventors: Haruhito Watanabe, Koichi Hasuike, Makoto Shiono, Hatsutaro Mizuno