Patents by Inventor Larry I. Kassel

Larry I. Kassel 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).

  • Dental matrix
    Patent number: 5114341
    Abstract: A method and apparatus for use in restoration procedures for teeth. The apparatus includes a matrix having a form portion extending between a pair of wings. The form portion has an anatomically contoured inner surface which extends between a pair of corners. The wings of the matrix are affixed together by an adhesive strip. A tapered flange extends outwardly from the form portion for insertion between the gingiva and tooth to permit introduction of restorative material in the gingival and/or subgingival area. The matrix is formed of clear material to permit viewing of the restorative material during the procedure.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: May 19, 1992
    Inventor: Larry I. Kassel
  • Dental matrix
    Patent number: 4997367
    Abstract: A method and apparatus for use in restoration procedures for teeth. The apparatus includes a matrix having a facial portion extending between a pair of wings. The facial portion has an anatomically contoured inner surface which extends between a pair of corners. The wings of the matrix are affixed together by an adhesive strip. A tapered flange extends outwardly from the facial portion for insertion between the gingiva and tooth to permit introduction of restorative material in the gingival and/or subgingival area. The matrix is formed of clear material to permit viewing of the restorative material during the procedure.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: March 5, 1991
    Inventor: Larry I. Kassel