Patents by Inventor Kaizo Shimura

Kaizo Shimura 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).

  • Patent number: 4957437
    Abstract: An artifical tooth comprises a contacting member formed of a composite material having compatibility with living tissues and diaposed at an outer portion of the artificial tooth to be contacted with alveolar bone, a metal base member having an opening therein and disposed inside of and attached to the contacting member, a metal post inserted into the opening of the metal base member and at least two elastic buffer members disposed in a space between the metal base member and the metal post. The composite material having compatibility with living tissues contains 40 to 95% by weight of a calcium phosphate compound and 60 to 5% by weight of an organic polymer. Each of the elastic buffer members is spaced apart for movably receiving the metal post by which pressure imposed upon the artificial tooth is transmitted.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: September 18, 1990
    Assignee: Mitsubishi Mining & Cement Co., Ltd.
    Inventors: Kaizo Shimura, Hiroyasu Takeuchi, Masahiro Hirano, Yohji Imai