Patents by Inventor Douglas L. Gin

Douglas L. Gin 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).

  • Publication number: 20210300876
    Abstract: A polymerizable Gemini surfactant based on tail groups with mixed isomer dienes. The Gemini surfactants may be produced having imidazolium head groups and diene tail groups with a near-equal abundance of the “E” and “Z” isomers. These compounds are lyotropic liquid crystals that can form bicontinuous cubic phases by self-assembly.
    Type: Application
    Filed: July 9, 2019
    Publication date: September 30, 2021
    Inventors: Rhia M Martin, Douglas L. Gin, Richard D Noble, Vinh The Nguyen, Brian J Elliott
  • Publication number: 20210205762
    Abstract: The invention includes compositions and methods for promoting gas mixtures separations, such as a carbon dioxide and methane mixture. The composition of the invention is based on a curable polymerized room-temperature ionic liquid [poly(RTIL)].
    Type: Application
    Filed: May 29, 2019
    Publication date: July 8, 2021
    Applicant: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE
    Inventors: DOUGLAS L. GIN, COLLIN ANDREW DUNN, ZOBAN SINGH, RICHARD D. NOBLE
  • Patent number: 11046826
    Abstract: The invention includes methods of reversibly tuning the effective pore size and/or solute rejection selectivity of a nanoporous lyotropic liquid crystal (LLC) polymer membrane. The membranes of the invention have high levels of pore size uniformity, allowing for size discrimination separation, and may be used for separation processes such as liquid-phase separations.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: June 29, 2021
    Assignee: The Regents of the University of Colorado
    Inventors: Douglas L. Gin, Richard D. Noble, Sarah Marie Dischinger, Blaine M. Carter
  • Patent number: 10428185
    Abstract: Provided herein is a block copolymer hydrogel, comprising a glass formed from a dry blend of polystyrene-poly(ethylene oxide) diblock copolymer (SO) and polystyrene-poly(ethylene oxide)-polystyrene triblock copolymer (SOS) in a molar ratio from between 95:5 and 1:99 SO/SOS and a liquid medium at a concentration between about 32:1 and about 2:1 liquid medium/SO—SOS by weight. The block copolymer hydrogel has a fatigue resistance to at least 500,000 compression cycles. Also provided are methods for forming the hydrogel.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: October 1, 2019
    Assignees: Colorado State University Research Foundation, The Regents of the University of Colorado, a Body Corporate
    Inventors: Travis S. Bailey, Chen Guo, Jackson T. Lewis, Kristine Fischenich, Tammy Haut Donahue, Dilanji Wijayasekara, Matthew G. Cowan, Douglas L. Gin, Richard D. Noble
  • Publication number: 20190031835
    Abstract: Provided herein is a block copolymer hydrogel, comprising a glass formed from a dry blend of polystyrene-poly(ethylene oxide) diblock copolymer (SO) and polystyrene-poly(ethylene oxide)-polystyrene triblock copolymer (SOS) in a molar ratio from between 95:5 and 1:99 SO/SOS and a liquid medium at a concentration between about 32:1 and about 2:1 liquid medium/SO—SOS by weight. The block copolymer hydrogel has a fatigue resistance to at least 500,000 compression cycles. Also provided are methods for forming the hydrogel.
    Type: Application
    Filed: December 5, 2016
    Publication date: January 31, 2019
    Applicants: Colorado State University Research Foundation, The Regents of the University of Colorado, a Body Corporate
    Inventors: Travis S. Bailey, Chen Guo, Jackson T. Lewis, Kristine Fischenich, Tammy Haut Donahue, Dilanji Wijayasekara, Matthew G. Cowan, Douglas L. Gin, Richard D. Noble
  • Publication number: 20180208728
    Abstract: The invention includes methods of reversibly tuning the effective pore size and/or solute rejection selectivity of a nanoporous lyotropic liquid crystal (LLC) polymer membrane. The membranes of the invention have high levels of pore size uniformity, allowing for size discrimination separation, and may be used for separation processes such as liquid-phase separations.
    Type: Application
    Filed: January 25, 2018
    Publication date: July 26, 2018
    Inventors: DOUGLAS L. GIN, RICHARD D. NOBLE, SARAH MARIE DISCHINGER, BLAINE M. CARTER
  • Patent number: 9446348
    Abstract: The present invention provides gels, solutions, films, membranes, compositions, and other materials containing polymerized and/or non-polymerized room-temperature ionic liquids (RTILs). These materials are useful in catalysis, gas separation and as antistatic agents. The RTILs are preferably imidazolium-based RTILs which are optionally substituted, such as with one or more hydroxyl groups. Optionally, the materials of the present invention are composite materials comprising both polymerized and non-polymerized RTILs. The RTIL polymer is formed from polymerized RTIL cations typically synthesized as monomers and polymerized in the presence of the non-polymerized RTIL cations to provide a solid composite material. The non-polymerized RTIL cations are not covalently bound to the cationic polymer but remain as free cations within the composite material able to associate with charged subunits of the polymer. These composite materials are useful in catalysis, gas separation, and antistatic applications.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: September 20, 2016
    Assignee: The Regents of the University of Colorado, a body corporate
    Inventors: Jason E. Bara, Trevor K. Carlisle, Evan S. Hatakeyama, Douglas L. Gin, Richard D. Noble, Robert L. Kerr, Andrew L. LaFrate
  • Publication number: 20160175764
    Abstract: The present invention provides gels, solutions, films, membranes, compositions, and other materials containing polymerized and/or non-polymerized room-temperature ionic liquids (RTILs). These materials are useful in catalysis, gas separation and as antistatic agents. The RTILs are preferably imidazolium-based RTILs which are optionally substituted, such as with one or more hydroxyl groups. Optionally, the materials of the present invention are composite materials comprising both polymerized and non-polymerized RTILs. The RTIL polymer is formed from polymerized RTIL cations typically synthesized as monomers and polymerized in the presence of the non-polymerized RTIL cations to provide a solid composite material. The non-polymerized RTIL cations are not covalently bound to the cationic polymer but remain as free cations within the composite material able to associate with charged subunits of the polymer. These composite materials are useful in catalysis, gas separation, and antistatic applications.
    Type: Application
    Filed: January 6, 2015
    Publication date: June 23, 2016
    Inventors: JASON E. BARA, TREVOR K. CARLISLE, EVAN S. HATAKEYAMA, DOUGLAS L. GIN, RICHARD D. NOBLE, ROBERT L. KERR, ANDREW L. LaFRATE
  • Patent number: 8926732
    Abstract: The present invention provides gels, solutions, films, membranes, compositions, and other materials containing polymerized and/or non-polymerized room-temperature ionic liquids (RTILs). These materials are useful in catalysis, gas separation and as antistatic agents. The RTILs are preferably imidazolium-based RTILs which are optionally substituted, such as with one or more hydroxyl groups. Optionally, the materials of the present invention are composite materials comprising both polymerized and non-polymerized RTILs. The RTIL polymer is formed from polymerized RTIL cations typically synthesized as monomers and polymerized in the presence of the non-polymerized RTIL cations to provide a solid composite material. The non-polymerized RTIL cations are not covalently bound to the cationic polymer but remain as free cations within the composite material able to associate with charged subunits of the polymer. These composite materials are useful in catalysis, gas separation, and antistatic applications.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: January 6, 2015
    Assignee: The Regents of the University of Colorado, a Body Corporate
    Inventors: Jason E. Bara, Trevor K. Carlisle, Evan S. Hatakeyama, Douglas L. Gin, Richard D. Noble, Robert L. Kerr, Andrew L. LaFrate
  • Publication number: 20140154499
    Abstract: A method of forming a nanoporous membrane includes preparing a solution of a gemini Imidazolium Lyotropic Liquid Crystal (LLC) monomer, a polar low-volatility organic solvent, and a radical photo-initiator in a volatile organic solvent; solvent-casting the solution onto a porous material, evaporating the volatile organic solvent; heating such that the gemini imidazolium monomer forms a Q-phase material and photopolymerizing the imidazolium monomer by exposing the radical photo-initiator to UV light; and exchanging the polar low-volatility organic solvent. Also disclosed is a membrane composed of polymerized gemini imidazolium LLC monomers, and a thin-film composite membrane having the Q-phase material supported on a porous supporting membrane.
    Type: Application
    Filed: July 22, 2012
    Publication date: June 5, 2014
    Applicant: The Regents of the University of Colorado, a body corporate
    Inventors: Douglas L. Gin, Blaine M. Carter, Brian R. Wiesenauer, Evan S. Hatakeyama, Richard D. Noble, John L. Barton
  • Publication number: 20130228520
    Abstract: The invention provides membranes useful for filtration of water and other liquids. The membrane may be a composite membrane having a polymer layer incorporating quaternary phosphonium or ammonium groups. The polymer layer may be resistant to protein adsorption in an aqueous environment. The membrane may also be a surface-modified membrane in which a polymer having quaternary phosphonium or ammonium groups is covalently attached to the membrane surface. Methods for making and using the membranes of the invention are also provided.
    Type: Application
    Filed: April 1, 2013
    Publication date: September 5, 2013
    Inventors: Douglas L. GIN, Evan S. Hatakeyama, Christopher J. Gabriel, Benny Dean Freeman, Hao Ju
  • Publication number: 20120186446
    Abstract: The present invention provides gels, solutions, films, membranes, compositions, and other materials containing polymerized and/or non-polymerized room-temperature ionic liquids (RTILs). These materials are useful in catalysis, gas separation and as antistatic agents. The RTILs are preferably imidazolium-based RTILs which are optionally substituted, such as with one or more hydroxyl groups. Optionally, the materials of the present invention are composite materials comprising both polymerized and non-polymerized RTILs. The RTIL polymer is formed from polymerized RTIL cations typically synthesized as monomers and polymerized in the presence of the non-polymerized RTIL cations to provide a solid composite material. The non-polymerized RTIL cations are not covalently bound to the cationic polymer but remain as free cations within the composite material able to associate with charged subunits of the polymer. These composite materials are useful in catalysis, gas separation, and antistatic applications.
    Type: Application
    Filed: July 23, 2010
    Publication date: July 26, 2012
    Applicant: The Regents of the University of Colorado, a body corporate
    Inventors: Jason Bara, Trevor K. Carlisle, Evan S. Hatakeyama, Douglas L. Gin, Richard D. Noble, Robert L. Kerr, Andrew L. LaFrate
  • Publication number: 20120160095
    Abstract: The invention includes a nanoporous LLC polymer membrane wherein ultra-thin films or clusters of inorganic material are deposited inside the porous structure of the LLC polymer membrane. The membranes of the invention have high levels of pore size uniformity, allowing for size discrimination separation, and may be used for separation processes such as gas-phase and liquid-phase separations.
    Type: Application
    Filed: November 23, 2011
    Publication date: June 28, 2012
    Inventors: Douglas L. Gin, Alan W. Weimer, Xinhua Liang
  • Publication number: 20120129045
    Abstract: A polymer-based electrolyte material for use in lithium ion batteries that exhibits high bulk ion conductivity at ambient and sub-ambient temperatures. The polymer electrolyte comprises a polymer matrix and a liquid electrolyte which is an organic solvent containing a free lithium salt. The polymer matrix is cross-linked and can be formed of cross-linkable ionic monomers, particularly ionic LLC surfactant monomers.
    Type: Application
    Filed: September 20, 2011
    Publication date: May 24, 2012
    Inventors: Douglas L. GIN, Robert L. Kerr, Brian J. Elliott
  • Patent number: 7931824
    Abstract: A modular surfactant architecture based on room temperature ionic liquids (RTILs) has been developed that affords non-polymerizable and polymerizable amphiphiles that form lamellar (L), hexagonal (H) or bicontinuous cubic (Q) LLC phases when mixed with water or RTILs serving as the polar solvent. The amphiphiles are imidazolium salts having two or more imidazolium head groups joined by one or more spacers. Polymerization of the LLC assembly can produce polymeric materials having ordered nanopores, with the ordering of the pores determined by the LLC phase.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: April 26, 2011
    Assignee: The Regents of The University of Colorado
    Inventors: Douglas L. Gin, Jason E. Bara, Richard D. Noble, Xiaohui Zeng
  • Publication number: 20100096327
    Abstract: The invention provides membranes useful for filtration of water and other liquids. The membrane may be a composite membrane having a polymer layer incorporating quaternary phosphonium or ammonium groups. The polymer layer may be resistant to protein adsorption in an aqueous environment. The membrane may also be a surface-modified membrane in which a polymer having quaternary phosphonium or ammonium groups is covalently attached to the membrane surface. Methods for making and using the membranes of the invention are also provided.
    Type: Application
    Filed: September 21, 2009
    Publication date: April 22, 2010
    Inventors: Douglas L. GIN, Evan S. HATAKEYAMA, Christopher J. GABRIEL, Benny Dean FREEMAN, Hao JU
  • Publication number: 20090291874
    Abstract: The present application discloses compositions comprising ionic liquids and an amine compound, and methods for using and producing the same. In some embodiments, the compositions disclosed herein are useful in reducing the amount of impurities in a fluid medium or a solid substrate.
    Type: Application
    Filed: May 21, 2009
    Publication date: November 26, 2009
    Inventors: Jason E. Bara, Dean E. Camper, Richard D. Noble, Douglas L. Gin
  • Publication number: 20090291872
    Abstract: The present invention provides compositions comprising ionic liquids and an amine compound, and methods for using and producing the same. In some embodiments, the compositions of the invention are useful in reducing the amount of impurities in a fluid medium or a solid substrate.
    Type: Application
    Filed: December 11, 2008
    Publication date: November 26, 2009
    Applicant: The Regents of the University of Colorado
    Inventors: Jason E. Bara, Dean E. Camper, Douglas L. Gin, Richard D. Noble
  • Patent number: 7604129
    Abstract: The invention provides composite nanofiltration membranes (FIG. 5) with lyotropic liquid crystal (LLC) polymer porous membranes (30) attached to a porous support (20). The LLC membranes are prepared from LLC monomers which form the inverted hexagonal or bicontinuous cubic phase. The arrangement, size, and chemical properties of the pores can be tailored on the molecular level. The composite membrane of the invention is useful for separation processes involving aqueous and nonaqueous solutions as well as gases. Methods for making and using the composite nanofiltration membranes of the inventions are also provided.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: October 20, 2009
    Assignee: The Regents of the Univeristy of Colorado, a body corporate
    Inventors: Douglas L. Gin, Meijuan Zhou, Richard D. Noble
  • Publication number: 20090173693
    Abstract: The invention provides composite nanofiltration membranes with a lyotropic liquid crystal (LLC) polymer composition embedded in or forming a layer on a porous support. The LLC membranes are prepared from LLC monomers which form a bicontinuous cubic (QI) phase. The arrangement, size, and chemical properties of the pores can be tailored on the molecular level. The composite membranes of the invention are useful for separation processes involving aqueous and nonaqueous solutions as well as gases. Methods for making and using the composite nanofiltration membranes of the invention are also provided.
    Type: Application
    Filed: May 15, 2008
    Publication date: July 9, 2009
    Inventors: Douglas L. Gin, Meijuan Zhou, Richard D. Noble, Jason E. Bara, Robert L. Kerr, Brian R. Wiesenauer