Patents by Inventor Philip B. Stengel

Philip B. Stengel 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).

  • Closure for wire loop binder
    Patent number: 5037229
    Abstract: This is a closure unit for wire loop binder which includes a flexible outer retaining flange specifically constructed to increase the resistance to longitudinal movement between the closure unit and wire loop binder. The increased friction resists movement of the closure when assembled in the closure position.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: August 6, 1991
    Assignee: Creative Binding Systems, Inc.
    Inventor: Philip B. Stengel
  • Booklet binding system
    Patent number: 5009537
    Abstract: This is a booklet binding system which includes an elongated closure unit specifically constructed and arranged to be removably inserted between the two rows of opposed spaced apart loops of a wire loop binding unit, wherein the closure unit defines a pair of spaced apart loop receiving grooves specifically oriented and arranged to receive the two rows of loops to interlock therewith and provide the desired closure therebetween.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: April 23, 1991
    Assignee: Creative Binding Systems, Inc.
    Inventor: Philip B. Stengel