Patents by Inventor Lloyd Forrestal

Lloyd Forrestal 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 for controlling surface concentration of a polymer additive
    Patent number: 5962563
    Abstract: The surface free energy of a polymer blend where a base polymer contains an additive having a different surface free energy than that of the base polymer can be controlled over a wide range of additive surface concentrations by appropriate choice of the mold surface free energy during fabrication. A high surface concentration of additive relative to a low bulk concentration can be achieved, leading to improved biocompatibility without loss of optical clarity.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: October 5, 1999
    Assignee: COBE Cardiovascular Operating Co., Inc.
    Inventors: Lloyd Forrestal, Marc Voorhees
  • Biocompatible coated article
    Patent number: 5738902
    Abstract: The biocompatibility of polymeric and metallic articles used in contact with blood can be substantially improved by coating the articles as described. The coating materials are triblock copolymers of the polylactone-polysiloxane-polylactone type. Optimum biocompatibility is provided by a coating of optimum surface concentration. Porous membranes can be coated as described, providing improved biocompatibility of blood oxygenators, hemodialyzers and the like.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: April 14, 1998
    Assignee: COBE Laboratories, Inc.
    Inventors: Lloyd Forrestal, Marc Voorhees, Harold Fisher
  • Biocompatible coated article
    Patent number: 5702823
    Abstract: The biocompatibility of polymeric and metallic articles used in contact with blood can be substantially improved by coating the articles as described. The coating materials are triblock copolymers of the polylactone-polysiloxane-polylactone type. Optimum biocompatibility is provided by a coating of optimum surface concentration. Porous membranes can be coated as described, providing improved biocompatibility of blood oxygenators, hemodialyzers and the like.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: December 30, 1997
    Assignee: COBE Laboratories, Inc.
    Inventors: Lloyd Forrestal, Marc Voorhees, Yung-Ming Chen, Richard A. Edrich
  • Biocompatible coated article
    Patent number: 5643681
    Abstract: The biocompatibility of polymeric and metallic articles used in contact with blood can be substantially improved by coating the articles as described. The coating materials are triblock copolymers of the polylactone-polysiloxane-polylactone type. Optimum biocompatibility is provided by a coating of optimum surface concentration. Porous membranes can be coated as described, providing improved biocompatibility of blood oxygenators, hemodialyzers and the like.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 1, 1997
    Assignee: Cobe Laboratories, Inc.
    Inventors: Marc Voorhees, Lloyd Forrestal, Harold Fisher
  • Anion exchange materials comprised of derivatized cellulose-polyester composites
    Patent number: 5354472
    Abstract: A novel biocompatible anion exchange membrane is prepared by reacting the hydroxyl groups of a chromatographic support material with a polyester-cellulose solution containing glycidyl trimethyl ammonium chloride and bis glycidyl polyethylene oxide.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: October 11, 1994
    Assignee: Cobe Cardiovascular, Inc.
    Inventors: Marc Voorhees, Ben F. Brian, III, Lloyd Forrestal