Patents by Inventor Kunio Niijima

Kunio Niijima 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).

  • Artificial filling and prosthetic material
    Patent number: 5697980
    Abstract: An artificial filling and prosthetic material, characterized in that the surface of a substrate is coated with a calcium phosphate compound together with a water-insoluble and bio-degradable binder polymer. This material is capable of firmly adhering to tissue for a short time.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 16, 1997
    Inventors: Sugio Otani, Sadakatsu Yanagisawa, Kunio Niijima, Kazusi Matuura, Hirosi Machino, Toru Fuse
  • 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