Patents by Inventor Masuo Yamamoto

Masuo Yamamoto 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).

  • Shank and cutting tool having the same
    Publication number: 20030072628
    Abstract: A shank for a cutting tool comprises a cutting edge holding member and a shaft member having a tip end joined to a rear end of the cutting edge holding member. One of the rear end of the cutting edge holding member and the tip end of the shaft member has a conical protrusion, and the other has a conical recess engaged with the conical protrusion. Upon the engagement of the conical protrusion and recess, the cutting end holding member and the shaft member are easily and assuredly brought into proper coaxial alignment.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 17, 2003
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Masuo Yamamoto, Shinya Takeuchi
  • Vacuum skin cleaner
    Patent number: 4900316
    Abstract: A vacuum skin cleaner includes a negative pressure generator and an applicator cap, wherein the negative pressure generator has an internal venturi water passage and a suction passage. One end of the water passage of the negative pressure generator is connected to a tap water faucet and has a discharge opening at its other end. The suction passage communicates with a throat of the venturi water passage, and the applicator cap communicates with the suction passage and has a mouth opening for making contact with the human skin.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: February 13, 1990
    Assignee: Azz International Co., Ltd.
    Inventor: Masuo Yamamoto