Patents Assigned to Masahiro Yoshimura
  • Apatite whisker and method for preparation thereof
    Patent number: 5227147
    Abstract: An apatite whisker has a mean aspect ratio (length along c-axis/length along a-axis) of not less than 10.0 and contains a carbonic acid group of not less than 0.01 wt. % based on total weight of the whisker. A method for preparing an apatite whisker involves precipitating and growing an apatite from a liquid containing phosphoric acid and calcium to have a mean aspect ratio (length along c-axis/length along a-axis) of not less than 10.0.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: July 13, 1993
    Assignees: Mitsubishi Materials Corp., Masahiro Yoshimura
    Inventors: Masahiro Yoshimura, Koji Ioku, Kengo Okamoto, Hiroyasu Takeuchi