Patents by Inventor Yoshiharu Ochi

Yoshiharu Ochi 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).

  • Highly pure titanium
    Patent number: 4891066
    Abstract: Disclosed is a highly pure titanium which comprises containing not more than 200 ppm of oxygen; not more than 30 ppm each of elements consisting of iron, nickel and chromium, and not more than 0.1 ppm each of elements consisting of sodium and potassium.Disclosed is also a process for preparing the above highly pure titanium which comprises melting a crude titanium obtained by molten salt electrolysis, in a high vacuum of 5.times.10.sup.-5 mbar or less.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: January 2, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazumi Shimotori, Yoshiharu Ochi, Hideo Ishihara, Takenori Umeki, Takashi Ishigami
  • Highly pure titanium and process for producing the same
    Patent number: 4793854
    Abstract: Disclosed is a highly pure titanium which comprises containing not more than 200 ppm of oxygen; not more than 30 ppm each of elements consisting of iron, nickel and chromium, and not more than 0.1 ppm each of elements consisting of sodium and potassium.Disclosed is also a process for preparing the above highly pure titanium which comprises melting a crude titanium obtained by molten salt electrolysis, in a high vacuum of 5.times.10.sup.-5 mbar or less.
    Type: Grant
    Filed: May 20, 1987
    Date of Patent: December 27, 1988
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazumi Shimotori, Yoshiharu Ochi, Hideo Ishihara, Takenori Umeki, Takashi Ishigami
  • Black ornament
    Patent number: 4634635
    Abstract: An ornament coated with silicon carbide having black luster which has been formed by chemical vapor deposition aided by D.C. glow discharge using hydrogen, a silicon compound and a hydrocarbon.The black ornament according to the present invention is very suitable for a case of a watch, a frame of eyeglasses and so on.
    Type: Grant
    Filed: September 27, 1984
    Date of Patent: January 6, 1987
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhisa Shiraishi, Takashi Fujita, Yoshiharu Ochi, Masahiko Hirose, Katsutarou Ichihara, Takashi Ishigami
  • Method of forming a decorative metallic nitride coating
    Patent number: 4420498
    Abstract: There is disclosed a method for forming a decorative metallic nitride coating on the surface of a substrate comprising the steps of disposing said substrate to be coated as a cathode in a material gas atmosphere at a pressure of 0.1 to 10 Torr, with said substrate maintained at a temperature of 200.degree. to 1000.degree. C., and applying a voltage of 200 to 8000 V to said substrate to prepare a direct current glow discharge space in the vicinity of said substrate, the improvement which comprises using as said material gas a mixed gas of a halide of titanium, zirconium or hafnium; hydrogen; and nitrogen, and controlling the current density of the electric current flowing through said substrate to be within the range of 0.01 to 1 mA/cm.sup.2.The method according to the present invention provides a uniform and beautiful metallic nitride coating which has a metallic luster stable with time, is excellent in mar resistance, and is suitable for decoration.
    Type: Grant
    Filed: June 22, 1982
    Date of Patent: December 13, 1983
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Masahiko Hirose, Tsuyoshi Yasui, Yoshiharu Ochi, Masatoshi Nakagawa
  • Nuclear fuel element
    Patent number: 4234385
    Abstract: A nuclear fuel element comprising a fuel body formed of nuclear fuel material and a clad for covering the fuel body. The clad is formed of an austenitic stainless steel containing silicon, titanium and carbon, respectively, in a controlled quantity.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: November 18, 1980
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Satoru Ozaki, Yoshiharu Ochi, Kazuo Matsumura
  • Highly pure titanium
    Patent number: RE34598
    Abstract: Disclosed is a highly pure titanium which comprises containing not more than 200 ppm of oxygen; not more than 30 ppm each of elements consisting of iron, nickel and chromium, and not more than 0.1 ppm each of elements consisting of sodium and potassium.Disclosed is also a process for preparing the above highly pure titanium which comprises melting a crude titanium obtained by molten salt electrolysis, in a high vacuum of 5.times.10.sup.-5 mbar or less.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: May 3, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazumi Shimotori, Yoshiharu Ochi, Hideo Ishihara, Takenori Umeki, Takashi Ishigami