Patents by Inventor Masatoyo Okitsu

Masatoyo Okitsu 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).

  • Metal single fiber-reinforced prepreg
    Patent number: 5208090
    Abstract: A composite material is disclosed which includes a sheet of a prepreg including a multitude of substantially uniaxially oriented filaments having a diameter of 3-16 .mu.m and impregnated with a thermosetting resin, and a multiplicity of metal single fibers having a diameter of 50-300 .mu.m and bonded to at least one surface of the sheet with the thermosetting resin, the single fibers being spaced apart from each other with a predetermined space and arranged substantially in parallel with the filaments.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: May 4, 1993
    Assignee: Somar Corporation
    Inventors: Masatoyo Okitsu, Tsuneo Akatsuka
  • Metal bat for use in baseball
    Patent number: 5104123
    Abstract: A metal bat for use in baseball is disclosed which includes a tubular metal body having an impact portion for hitting a ball, and a layer of a resin foam provided on and bonded to the inside wall of the impact portion and having a density of 0.05-0.5 g/cm.sup.3.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: April 14, 1992
    Assignee: Somar Corporation
    Inventors: Masatoyo Okitsu, Katsuji Kitagawa, Masao Kubo, Toshiyuki Arisato
  • Surfing boom
    Patent number: 4867091
    Abstract: A surfing boom comprising a pipe of synthetic resin having a density of 1.4-1.6 g/cm.sup.3. The pipe is reinforced by a plurality of carbon fiber layers. In a first carbon fiber layer, fibers are oriented within an angle of 60.degree.-90.degree. to an axial direction of the boom. In a second carbon fiber layer, fibers are oriented within an angle of 30.degree. to the axial direction of boom.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: September 19, 1989
    Assignee: Somar Corporation
    Inventors: Toshiyuki Arisato, Masatoyo Okitsu, Toshio Mitsuyasu