Patents by Inventor Krzysztof Pietrzak

Krzysztof Pietrzak 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).

  • Patent number: 9764068
    Abstract: There is described inter alia a device having a surface comprising a layered coating wherein the outer coating layer comprises a plurality of cationic hyperbranched polymer molecules characterized by having (i) a core moiety of molecular weight 14-1,000 Da (ii) a total molecular weight of 1,500 to 1,000,000 Da (iii) a ratio of total molecular weight to core moiety molecular weight of at least 80:1 and (iv) functional end groups, whereby one or more of said functional end groups have an anti-coagulant entity covalently attached thereto.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 19, 2017
    Assignee: W.L. Gore and Associates Inc.
    Inventors: Karin Leontein, Per Antoni, Daniel Nyström, Paul Begovac, Krzysztof Pietrzak
  • Publication number: 20160310646
    Abstract: There is described inter alia a device having a surface comprising a layered coating wherein the outer coating layer comprises a plurality of cationic hyperbranched polymer molecules characterized by having (i) a core moiety of molecular weight 14-1,000 Da (ii) a total molecular weight of 1,500 to 1,000,000 Da (iii) a ratio of total molecular weight to core moiety molecular weight of at least 80:1 and (iv) functional end groups, whereby one or more of said functional end groups have an anti-coagulant entity covalently attached thereto.
    Type: Application
    Filed: July 7, 2016
    Publication date: October 27, 2016
    Inventors: Karin Leontein, Per Antoni, Daniel Nyström, Paul Begovac, Krzysztof Pietrzak
  • Patent number: 9408950
    Abstract: There is described inter alia a device having a surface comprising a layered coating wherein the outer coating layer comprises a plurality of cationic hyperbranched polymer molecules characterized by having (i) a core moiety of molecular weight 14-1,000 Da (ii) a total molecular weight of 1,500 to 1,000,000 Da (iii) a ratio of total molecular weight to core moiety molecular weight of at least 80:1 and (iv) functional end groups, whereby one or more of said functional end groups have an anti-coagulant entity covalently attached thereto.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: August 9, 2016
    Assignee: W.L. Gore & Associates, Inc.
    Inventors: Karin Leontein, Per Antoni, Daniel Nyström, Paul Begovac, Krzysztof Pietrzak
  • Patent number: 9272075
    Abstract: There is provided inter alia a substrate with a surface having a hydrophilic coating comprising a cross-linked copolymer of components A and B, and optional components C and D; wherein component A comprises one or more C2-C16 hydrophilic monomers each bearing one or more alkene and/or alkyne groups; component B comprises one or more hydrophilic polymers each bearing two or more alkene and/or alkyne groups; component C, if present, comprises one or more beneficial agents each bearing one or more alkene or alkyne groups; and component D, if present, comprises one or more low molecular weight cross-linking agents each bearing two or more functional groups independently selected from thiol, alkene and alkyne groups; wherein the cross-linked copolymer is formed by radical polymerization involving the alkene and/or alkyne groups of components A, B and C (if present) and involving the functional groups of component D (if present); wherein the hydrophilic coating optionally comprises component E which comprises one
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: March 1, 2016
    Assignee: W.L. Gore & Associates, Inc.
    Inventors: Per Antoni, Daniel Nystrom, Lars Vincent, Krzysztof Pietrzak
  • Publication number: 20150367040
    Abstract: There is described inter alia a device having a surface comprising a layered coating wherein the outer coating layer comprises a plurality of cationic hyperbranched polymer molecules characterized by having (i) a core moiety of molecular weight 14-1,000 Da (ii) a total molecular weight of 1,500 to 1,000,000 Da (iii) a ratio of total molecular weight to core moiety molecular weight of at least 80:1 and (iv) functional end groups, whereby one or more of said functional end groups have an anti-coagulant entity covalently attached thereto.
    Type: Application
    Filed: July 2, 2015
    Publication date: December 24, 2015
    Inventors: Karin Leontein, Per Antoni, Daniel Nyström, Paul Begovac, Krzysztof Pietrzak
  • Patent number: 9101696
    Abstract: There is described inter alia a device having a surface comprising a layered coating wherein the outer coating layer comprises a plurality of cationic hyperbranched polymer molecules characterized by having (i) a core moiety of molecular weight 14-1,000 Da (ii) a total molecular weight of 1,500 to 1,000,000 Da (iii) a ratio of total molecular weight to core moiety molecular weight of at least 80:1 and (iv) functional end groups, whereby one or more of said functional end groups have an anti-coagulant entity covalently attached thereto.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 11, 2015
    Assignee: W.L. Gore & Associates, Inc.
    Inventors: Karin Leontein, Per Antoni, Daniel Nyström, Paul Begovac, Krzysztof Pietrzak
  • Publication number: 20140221522
    Abstract: There is provided inter alia a substrate with a surface having a hydrophilic coating comprising a cross-linked copolymer of components A and B, and optional components C and D; wherein component A comprises one or more C2-C16 hydrophilic monomers each bearing one or more alkene and/or alkyne groups; component B comprises one or more hydrophilic polymers each bearing two or more alkene and/or alkyne groups; component C, if present, comprises one or more beneficial agents each bearing one or more alkene or alkyne groups; and component D, if present, comprises one or more low molecular weight cross-linking agents each bearing two or more functional groups independently selected from thiol, alkene and alkyne groups; wherein the cross-linked copolymer is formed by radical polymerisation involving the alkene and/or alkyne groups of components A, B and C (if present) and involving the functional groups of component D (if present); wherein the hydrophilic coating optionally comprises component E which comprises on
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Inventors: Per Antoni, Daniel Nystrom, Lars Vincent, Krzysztof Pietrzak
  • Publication number: 20120231043
    Abstract: There is described inter alia a device having a surface comprising a layered coating wherein the outer coating layer comprises a plurality of cationic hyperbranched polymer molecules characterized by having (i) a core moiety of molecular weight 14-1,000 Da (ii) a total molecular weight of 1,500 to 1,000,000 Da (iii) a ratio of total molecular weight to core moiety molecular weight of at least 80:1 and (iv) functional end groups, whereby one or more of said functional end groups have an anti-coagulant entity covalently attached thereto.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Inventors: Karin Leontein, Per Antoni, Daniel Nyström, Paul Begovac, Krzysztof Pietrzak
  • Publication number: 20080089919
    Abstract: The present invention relates to immobilized biologically active entities having heparin cofactor II binding activity.
    Type: Application
    Filed: November 9, 2007
    Publication date: April 17, 2008
    Inventors: Robert Cleek, Michael Daly, Krzysztof Pietrzak
  • Publication number: 20070264301
    Abstract: The present invention is directed to immobilized biologically active entities that retain significant biological activity following sterilization of the immobilized biologically active entities.
    Type: Application
    Filed: May 12, 2006
    Publication date: November 15, 2007
    Inventors: Robert Cleek, Michael Daly, Krzysztof Pietrzak
  • Publication number: 20070264302
    Abstract: The present invention is directed to immobilized biologically active entities that retain significant biological activity following mechanical manipulation of a substrate material to which the entities are immobilized.
    Type: Application
    Filed: May 12, 2006
    Publication date: November 15, 2007
    Inventors: Robert Cleek, Michael Daly, Krzysztof Pietrzak
  • Publication number: 20070264308
    Abstract: The present invention relates to immobilized biologically active entities that retain significant biological activity following mechanical manipulation of a substrate material to which the entities are immobilized.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 15, 2007
    Inventors: Robert Cleek, Michael Daly, Krzysztof Pietrzak