Patents by Inventor Margaret Z. Kilbourne-Brook

Margaret Z. Kilbourne-Brook 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).

  • Patent number: 5771900
    Abstract: A contraceptive diaphragm having a rim surrounding a thin membrane, the membrane having a cervical dome extending downwardly from a posterior portion of the membrane. The rim has two curvilinear bands joined together at their respective ends and encased in a coil spring. The shape of the bands creates a rim which curves slightly upwardly at the anterior end of the diaphragm and slightly downwardly at its posterior end. The rim is formed with a curvilinear profile which provides an advantageous fit. A small dome projects upwardly from an anterior portion of the membrane which is grasped by the wearer to remove the diaphragm.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: June 30, 1998
    Assignee: Path
    Inventors: Glenn D. Austin, Theodore J. Colburn, Margaret Z. Kilbourne-Brook, Donald A. Todd