Patents by Inventor Paul D. Drumheller

Paul D. Drumheller 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: 8802742
    Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: August 12, 2014
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Ping Xu, Jack J Hegenbarth, Xin Kang Chen, Rachel Radspinner, Paul D Drumheller, William B Johnson, Wen K Liu
  • Publication number: 20140128544
    Abstract: The present invention relates to immobilized biologically active entities that retain a significant biological activity following manipulation. The invention also comprises a medical substrate comprising a heparin entity bound onto a substrate via at least one heparin molecule, wherein said bound heparin entity is heparinase-1 sensitive.
    Type: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: W. L. Gore & Associates, Inc.
    Inventors: Roy Biran, Charles D. Claude, Robert L. Cleek, Paul D. Drumheller
  • Publication number: 20140072518
    Abstract: The present disclosure is directed to a class of fluorinated copolymers, such as a PTFE copolymers, that can be dissolved in low toxicity solvents, such as Class III Solvents, and that enable the creation of stable water-in-solvent emulsions comprising the fluorinated copolymers dissolved in a low toxicity solvents and a hydrophilic agent (e.g., a therapeutic agent) dissolved in an aqueous solvent, such as water or saline.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 13, 2014
    Applicant: W. L. Gore & Associates, Inc.
    Inventors: Robert L. Cleek, Paul D. Drumheller, Theresa A. Holland
  • Publication number: 20140072514
    Abstract: The present disclosure is directed to a class of fluorinated copolymers, such as PTFE copolymers, that can be dissolved in low toxicity solvents, such as Class III Solvents, and that enable the creation of stable water-in-solvent emulsions comprising the fluorinated copolymers dissolved in a low toxicity solvents and a hydrophilic agent (e.g., a therapeutic agent) dissolved in an aqueous solvent, such as water or saline.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 13, 2014
    Applicant: W. L. Gore & Associates, Inc.
    Inventors: Robert L. Cleek, Edward H. Cully, Paul D. Drumheller, Theresa A. Holland
  • Patent number: 8658707
    Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: February 25, 2014
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Ping Xu, Jack J. Hegenbarth, Rachel Radspinner, Paul D. Drumheller, William B. Johnson, Wen K. Liu, Xin Kang Chen
  • Patent number: 8652803
    Abstract: The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining. The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: February 18, 2014
    Assignee: Ventana Medical Systems, Inc.
    Inventors: Brian H. Kram, Christopher Bieniarz, Paul D. Drumheller
  • Publication number: 20140018457
    Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.
    Type: Application
    Filed: September 12, 2013
    Publication date: January 16, 2014
    Applicant: W. L. Gore & Associates, Inc.
    Inventors: Ping Xu, Jack J. Hegenbarth, Xin Kang Chen, Rachel Radspinner, Paul D. Drumheller, William B. Johnson, Wen K. Lui
  • Publication number: 20140005286
    Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.
    Type: Application
    Filed: August 29, 2013
    Publication date: January 2, 2014
    Applicant: W.L. Gore & Associates, Inc.
    Inventors: Ping Xu, Jack J. Hegenbarth, Xin Kang Chen, Rachel Radspinner, Paul D. Drumheller, William B. Johnson, Wen K. Liu
  • Patent number: 8591932
    Abstract: The present invention relates to immobilized biologically active entities that retain a significant biological activity following manipulation. The invention also comprises a medical substrate comprising a heparin entity bound onto a substrate via at least one heparin molecule, wherein said bound heparin entity is heparinase-1 sensitive.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: November 26, 2013
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Robert L. Cleek, Paul D Drumheller, Mei Li, Nora Mardirosian
  • Publication number: 20130309718
    Abstract: The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining. The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions.
    Type: Application
    Filed: July 18, 2013
    Publication date: November 21, 2013
    Applicant: Ventana Medical Systems, Inc.
    Inventors: Brian H. Kram, Christopher Bieniarz, Paul D. Drumheller
  • Publication number: 20130253426
    Abstract: The invention is directed to eluting medical devices that enable consistent “on-demand” delivery of therapeutic agents to a vessel. The medical device of the current invention comprises an expandable member, a hydrophilic coating comprising at least one therapeutic agent about the expandable member or structural layer and an outer sheath with a variably permeable microstructure. The design and methods disclosed herein ensures that therapeutic agent delivery occurs essentially only during expansion of the expandable member, minimizing coating and/or therapeutic agent loss to the bloodstream and providing controlled delivery to the treatment site.
    Type: Application
    Filed: September 4, 2012
    Publication date: September 26, 2013
    Applicant: W. L. Gore & Associates, Inc.
    Inventors: Carey V. Campbell, Robert L. Cleek, Daniel L. Crandall, James F. Davidson, Paul D. Drumheller, Cody L. Hartman, Theresa A. Holland, Thane L. Krazler, Mei Li, Gregory LoStracco, Bruce M. Steinhaus, Benjamin M. Trapp, Thomas G. Triebes
  • Patent number: 8512978
    Abstract: The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining. The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: August 20, 2013
    Assignee: Ventana Medical Systems, Inc.
    Inventors: Brian H. Kram, Christopher Bieniarz, Paul D. Drumheller
  • Publication number: 20130029376
    Abstract: The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions.
    Type: Application
    Filed: October 4, 2012
    Publication date: January 31, 2013
    Inventors: Brian H. Kram, Christopher Bieniarz, Paul D. Drumheller
  • Patent number: 8288121
    Abstract: The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining. The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: October 16, 2012
    Assignee: Ventana Medical Systems, Inc.
    Inventors: Brian H. Kram, Christopher Bieniarz, Paul D. Drumheller
  • Publication number: 20120035283
    Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.
    Type: Application
    Filed: September 21, 2010
    Publication date: February 9, 2012
    Inventors: Ping Xu, Jack J. Hegenbarth, Rachel Radspinner, Paul D. Drumheller, William B. Johnson, Wen K. Liu, Xin Kang Chen
  • Patent number: 8048500
    Abstract: The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: November 1, 2011
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Paul D. Drumheller, Ted R. Farnsworth, Charles Flynn, Byron K. Hayes, Charles F. White
  • Publication number: 20110064781
    Abstract: The present invention relates to immobilized biologically active entities that retain a significant biological activity following manipulation. The invention also comprises a medical substrate comprising a heparin entity bound onto a substrate via at least one heparin molecule, wherein said bound heparin entity is heparinase-1 sensitive.
    Type: Application
    Filed: September 17, 2009
    Publication date: March 17, 2011
    Inventors: ROBERT L. CLEEK, PAUL D. DRUMHELLER, MEI LI, NORA MARDIROSIAN
  • Publication number: 20110065085
    Abstract: The present invention relates to immobilized biologically active entities that retain a significant biological activity following manipulation. The invention also comprises a medical substrate comprising a heparin entity bound onto a substrate via at least one heparin molecule, wherein said bound heparin entity is heparinase-1 sensitive.
    Type: Application
    Filed: October 14, 2009
    Publication date: March 17, 2011
    Inventors: Roy Biran, Charles D. Claude, Robert L. Cleek, Paul D. Drumheller
  • Publication number: 20110039960
    Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.
    Type: Application
    Filed: September 21, 2010
    Publication date: February 17, 2011
    Inventors: Ping Xu, Jack J. Hegenbarth, Rachel Radspinner, Paul D. Drumheller, William B. Johnson, Wen K. Liu, Xin Kang Chen
  • Publication number: 20100233266
    Abstract: The present invention relates to articles and methods of treating vascular conditions with a thixotropic, turbid, bioactive agent-containing gel material capable of being essentially removed from an implantation site upon re-establishment of fluid flow at the implantation site.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 16, 2010
    Inventors: Robert L. Cleek, Paul D. Drumheller, Theresa A. Holland