Patents Assigned to Sugio Otani
  • Dental implant
    Patent number: 5049074
    Abstract: A dental implant comprising a core material and a porous layer formed on the core material, wherein at least a part of the core material coated by the porous layer has a non-circular cross-sectional shape so as not to rotate relative to the porous layer.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: September 17, 1991
    Assignees: Sugio Otani, Sadakatsu Yanagisawa, Kunio Niijima, Mitsubishi Kasei Corporation, Research Development Corporation of Japan
    Inventors: Sugio Otani, Sadakatsu Yanagisawa, Kunio Niijima, Kazusi Matuura, Hirosi Matino, Tooru Fuse
  • Carbon artificial prosthetic material
    Patent number: 4457984
    Abstract: An artificial prosthetic material made of a carbon source as a main component comprises a porous structure layer comprising a fibrous material and pyrolytic carbon deposited fibrous material.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: July 3, 1984
    Assignees: Mitsubishi Chemical Industries, Ltd., Sugio Otani, Sadakatsu Yanagisawa, Kunio Niijima
    Inventors: Sugio Otani, Sadakatsu Yanagisawa, Kunio Niijima