Patents by Inventor Tsuneo Tabata

Tsuneo Tabata 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).

  • Orthopedic and dental implant ceramic composition and process for preparing same
    Patent number: 4149893
    Abstract: Disclosed is an orthopedic and dental implant ceramic composition comprising hydroxyapatite and whitlockite. Said composition is prepared by blending 50 to 99.5% by weight of a crystalline hydroxyapatite and 0.5 to 50% by weight of whitlockite, and then, sintering the blend at a temperature of 900.degree. to 1,400.degree. C. Said crystalline hydroxyapatite is prepared by the solid phase reaction wherein a mixture of a calcium phosphate, having a Ca/P ratio of 1.5 to 1.67 by mole, and a stoichiometric amount or more of a calcium compound is heated at a temperature of 500.degree. to 1,000.degree. C. Said calcium compound is at least one compound selected from the group consisting of CaCO.sub.3, CaO, Ca(OH).sub.2, CaF.sub.2, Ca(COO).sub.2, Ca(NO.sub.3).sub.2 and CaCl.sub.2.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: April 17, 1979
    Assignee: Tokyo Medical and Dental University
    Inventors: Hideki Aoki, Kazuo Kato, Tsuneo Tabata, Makoto Ogiso