Patents by Inventor Ralph Louis Spengler

Ralph Louis Spengler 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).

  • Multifilament surgical cord
    Patent number: 6045571
    Abstract: A surgical cord comprising a interlocking multifilament sheath and an interlocked multifilament core. The interlocking multifilament core construction is characterized by being braided or knitted; preferred are braided cores with a pick counts ranging between 5 and 40.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: April 4, 2000
    Assignee: Ethicon, Inc.
    Inventors: Donald G. Hill, Margaret D'Aversa, Ilya S. Koyfman, Ralph Louis Spengler, Crawford R. Britt, Robert J. Cerwin, Hal Brent Woodrow