Patents by Inventor Tsuneyoshi Ajimi

Tsuneyoshi Ajimi 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).

  • Drilling tool assembly and its center drill and cup shape drill
    Patent number: 5813802
    Abstract: A center drill used for machining a hole in a work piece which is adapted to be partially enclosed in a cup shape drill member in a side view thereof, includes a drill portion provided on a leading end of the center drill, and a dust extractor radially outwardly extending from a portion of the center drill which is enclosed in the cup shape drill member.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: September 29, 1998
    Assignee: House B.M. Co., Ltd.
    Inventors: Kunio Ajimi, Tsuneyoshi Ajimi