Patents by Inventor Daisuke Sugimura

Daisuke Sugimura 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 of heating and quenching a hollow metal member
    Patent number: 6178631
    Abstract: A method of manufacturing a metal member includes the steps of forming a metal body having a hollow core, wherein a side of the metal body defines a core opening exposing the hollow core; placing a filament through the core opening into the hollow core; closing the core opening around the filament; and heating the metal body so that the filament disintegrates to form a filament hole sufficient to allow gas within the hollow core to escape through the filament hole.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: January 30, 2001
    Assignee: Shimano, Inc.
    Inventors: Shin Tanabe, Daisuke Sugimura