Patents by Inventor Evan S. HATAKEYAMA

Evan S. HATAKEYAMA 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: 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: 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: 20090171098
    Abstract: The invention provides heteroaryl salts and methods for producing the same. In particular, the invention provides heteroaryl salts of the formula: and methods for producing the same, where M, a, X1, X2, X3, and X4 are those defined herein.
    Type: Application
    Filed: December 11, 2008
    Publication date: July 2, 2009
    Applicant: THE REGENTS OF THE UNIVERSITY OF COLORADO
    Inventors: Jason E. Bara, Evan S. Hatakeyama, Richard D. Noble, Douglas L. Gin