Patents by Inventor Sam Marchand

Sam Marchand 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).

  • Biodegradable prosthetic device
    Patent number: 4650488
    Abstract: A prosthetic device formed of a biodegradable material and useful as a ventilation tube for insertion between the middle ear and the outer ear. The device includes a shaft with an axial passage, an inner flange and an outer flange. At least a portion of the outer surface of the shaft is tapered, with the taper increasing from the inner to the outer flange. The larger diameter outer flange and any attached portion of the shaft are, therefore, forced outwardly when the tapered portion of the shaft is in contact with animal tissue biodegrades before other portions of the prosthesis.
    Type: Grant
    Filed: May 16, 1984
    Date of Patent: March 17, 1987
    Assignee: Richards Medical Company
    Inventors: F. Barry Bays, Richard L. Dunn, Sam Marchand, Richard W. Treharne, III