Patents Assigned to Tomy, Inc.
  • Orthodontic device
    Patent number: 5064369
    Abstract: An orthodontic device comprises a bracket formed of a sintered polycrystal of alumina exhibiting light transmittance of 70 to 80% and an auxilliary bonding member formed of a soft, transparent or translucent, thin, synthetic resin plate having a mounting aperture formed therein for mounting the bracket therein and a plurality of graduations drawn thereon for indicating the depth from a reference point on the free end of a tooth being subjected to orthodontic treatment to the center of the bracket.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: November 12, 1991
    Assignee: Tomy, Inc.
    Inventor: Kozo Kawaguchi
  • Orthodontic coil spring and method of making the same
    Patent number: 4849032
    Abstract: An orthodontic coil spring is made of a shape-memory alloy wire which is wound into a coil and heat treated into a superelastic state. The coil spring imparts a predetermined spring force within a superelastic zone of deflection.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: July 18, 1989
    Assignee: Tomy, Inc.
    Inventor: Kozo Kawaguchi