Patents by Inventor Kazuko Kawaguchi

Kazuko Kawaguchi 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).

  • Instrument and method for removing dental restoration
    Patent number: 6413088
    Abstract: An instrument is provided, e.g. a forceps or a pair of pliers, capable of removing a dental restoration from a tooth without destroying the dental restoration. The distal ends of a pair of jaws of the instrument each have an inner slant portion, a first outer slant portion configured to contact the boundary between the tooth and the dental restoration, and a second outer slant portion adjacent to the first outer slant portion on a side thereof remote from the boundary. When the distal ends of the jaws are disposed perpendicularly to the axis of the tooth, the inner slant portion has an inclination angle of about 20±5 degrees with respect to a horizontal plane perpendicular to the axis of the tooth. The first outer slant portion has an inclination angle of about 35±5 degrees with respect to the horizontal plane. The second outer slant portion has an inclination angle of about 1±1 degrees with respect to the horizontal plane.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: July 2, 2002
    Inventor: Kazuko Kawaguchi