Patents by Inventor Christopher J. Underwood

Christopher J. Underwood 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).

  • Method of forming a vascular prosthesis
    Patent number: 5549860
    Abstract: A vascular prosthesis is formed from a luminate vessel by precipitating onto the vessel a sheet of polymer from a solution including an organic solvent and precipitable polymer, and forming an aperture in the sheet, the aperture communicating with the lumen of the vessel.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: August 27, 1996
    Assignee: PolyMedica Industries, Inc.
    Inventors: David Charlesworth, Christopher J. Underwood, Kerm S. Chian
  • Method of forming a bio-compatible vascular prosthesis
    Patent number: 5132066
    Abstract: A method of forming a bio-compatible vascular prosthesis comprising making a polymer material by coagulation in which the polymer, dissolved in an organic solvent, is formed into the material in a coagulant, the method being carried out at such low temperature as not substantially to degrade the polymer.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: July 21, 1992
    Assignee: Newtec V.P. Limited
    Inventors: David Charlesworth, Kerm S. Chian, Christopher J. Underwood