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Lloyd Forrestal Phones & Addresses

  • 1785 View Point Rd, Boulder, CO 80305

Publications

Us Patents

Method For Controlling Surface Concentration Of A Polymer Additive

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US Patent:
59625635, Oct 5, 1999
Filed:
Nov 12, 1996
Appl. No.:
8/748163
Inventors:
Lloyd Forrestal - Boulder CO
Marc Voorhees - Arvada CO
Assignee:
COBE Cardiovascular Operating Co., Inc. - Arvada CO
International Classification:
C08J 554
US Classification:
524268
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.

Biocompatible Anion Exchange Materials

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US Patent:
56480709, Jul 15, 1997
Filed:
Sep 30, 1994
Appl. No.:
8/315696
Inventors:
Ben F. Brian - Golden CO
Marc Voorhees - Arvada CO
Lloyd James Forrestal - Boulder CO
Assignee:
Cobe Laboratories, Inc. - Lakewood CO
International Classification:
B01D 1508
US Classification:
424 781
Abstract:
Biocompatible anion exchange materials are provided comprising a support having a quaternary amine moiety and a polyethylene oxide (PEO) moiety having between about 10 and about 200 repeating units covalently bonded thereto, such that said quaternary amine and polyethylene oxide moieties are substantially homogeneously distributed on said support. These anion exchange materials are useful for removing negatively charged species such as heparin from blood and other body fluids without significant removal of platelets. Methods of making and using these materials are also provided.

Anion Exchange Materials Comprised Of Derivatized Cellulose-Polyester Composites

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US Patent:
53544722, Oct 11, 1994
Filed:
Nov 23, 1992
Appl. No.:
7/981912
Inventors:
Marc Voorhees - Arvada CO
Ben F. Brian - Littleton CO
Lloyd Forrestal - Boulder CO
Assignee:
Cobe Cardiovascular, Inc. - Arvada CO
International Classification:
B01D 1508
C02J 520
US Classification:
210635
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.

Biocompatible Coated Article

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US Patent:
57389020, Apr 14, 1998
Filed:
Oct 10, 1996
Appl. No.:
8/728824
Inventors:
Lloyd Forrestal - Boulder CO
Marc Voorhees - Arvada CO
Harold Fisher - Charlotte NC
Assignee:
COBE Laboratories, Inc. - Lakewood CO
International Classification:
B05D 306
US Classification:
427 212
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.

Biocompatible Coated Article

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US Patent:
56436815, Jul 1, 1997
Filed:
Jun 7, 1995
Appl. No.:
8/473723
Inventors:
Marc Voorhees - Arvada CO
Lloyd Forrestal - Boulder CO
Harold Fisher - Charlotte NC
Assignee:
Cobe Laboratories, Inc. - Lakewood CO
International Classification:
B32B 2732
B32B 2736
US Classification:
428483
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.

Biocompatible Coated Article

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US Patent:
57028230, Dec 30, 1997
Filed:
Oct 10, 1996
Appl. No.:
8/728823
Inventors:
Lloyd Forrestal - Boulder CO
Marc Voorhees - Arvada CO
Yung-Ming Chen - Westminster CO
Richard A. Edrich - Denver CO
Assignee:
COBE Laboratories, Inc. - Lakewood CO
International Classification:
B32B 1508
US Classification:
458450
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.
Lloyd J Forrestal from Boulder, CO Get Report