Patents by Inventor Ian P. Middleton

Ian P. Middleton 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).

  • Crosslinked polyurethane medical prosthesis
    Patent number: 4904272
    Abstract: A fibrous polyurethane medical prosthesis wherein the polyurethane has been at least partially crosslinked with a haloalkylisocyanate.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: February 27, 1990
    Assignee: Ethicon, Inc.
    Inventors: Ian P. Middleton, Jerzy Paprotny
  • Process of crosslinking a polyurethane prosthesis with a haloalkylisocyante
    Patent number: 4798607
    Abstract: A process is disclosed for producing a medical prosthesis by forming the prosthesis from an uncrosslinked polyurethane and then at least partially crosslinking the polyurethane with a vaporizable halo alkylisocyanate. The haloalkylisocyanate (e.g. chloromethylisocyanate) is reacted with the uncrosslinked polyurethane at a temperature which will not degrade or soften the polyurethane, (in its uncrosslinked form) in order to crosslink the polyurethane.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: January 17, 1989
    Inventors: Ian P. Middleton, Jerzy Paprotny