Patents by Inventor Hunaid Nulwala

Hunaid Nulwala 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: 20190177615
    Abstract: Quantum dots that are cadmium-free and/or stoichiometrically tuned are disclosed, as are methods of making them. Inclusion of the quantum dots and others in a stabilizing polymer matrix is also disclosed. The polymers are chosen for their strong binding affinity to the outer layers of the quantum dots such that the bond dissociation energy between the polymer material and the quantum dot is greater than the energy required to reach the melt temperature of the cross-linked polymer.
    Type: Application
    Filed: May 19, 2017
    Publication date: June 13, 2019
    Applicant: Crystalplex Corporation
    Inventors: Lianhua QU, Hunaid NULWALA
  • Patent number: 9975080
    Abstract: Exemplary embodiments relate to methods for removal of CO2 and other acid gases from gaseous fuels prior to combustion. Exemplary methods may be used for CO2 capture, H2 purification and natural gas sweetening. Exemplary methods use at least one ionic liquid that has excellent CO2 solubility, selectivity over hydrogen, low viscosity, and resistance to H2S.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: May 22, 2018
    Assignee: U.S. Department of Energy
    Inventors: David Luebke, Hunaid Nulwala, Brian Kail, Fan Shi, Robert L Thompson, Nicholas Siefert
  • Patent number: 9969823
    Abstract: Herein, we describe polymerized ionic liquids, demonstrate the synthesis of polymerized ionic liquids, and demonstrate the polymerization of triazolium monomers. One embodiment shows the polymeriazation of the triazolium monomers with bis(trifluoromethanesulfonyl)imide anions. In another embodiment we show the feasibility of copolymerizing with commodity monomers such as styrene using free radical polymerization techniques.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: May 15, 2018
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: David Luebke, Hunaid Nulwala, Krzysztof Matyjaszewski, Brian Adzima
  • Patent number: 9643123
    Abstract: Methods and compositions useful, for example, for physical solvent carbon capture. A method comprising: contacting at least one first composition comprising carbon dioxide with at least one second composition to at least partially dissolve the carbon dioxide of the first composition in the second composition, wherein the second composition comprises at least one siloxane compound which is covalently modified with at least one non-siloxane group comprising at least one heteroatom. Polydimethylsiloxane (PDMS) materials and ethylene-glycol based materials have high carbon dioxide solubility but suffer from various problems. PDMS is hydrophobic but suffers from low selectivity. Ethylene-glycol based systems have good solubility and selectivity, but suffer from high affinity to water. Solvents were developed which keep the desired combinations of properties, and result in a simplified, overall process for carbon dioxide removal from a mixed gas stream.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: May 9, 2017
    Assignees: CARNEGIE MELLON UNIVERSITY, U.S. DEPARTMENT OF ENERGY
    Inventors: Hunaid Nulwala, David Luebke
  • Patent number: 9243174
    Abstract: Methods and compositions relating to poly(hydroxyl urethane) compounds are described herein that are useful as, among other things, binders and adhesives. The cross-linked composition is achieved through the reaction of a cyclic carbonate, a compound having two or more thiol groups, and a compound having two or more amine functional groups. In addition, a method of adhesively binding two or more substrates using the cross-linked composition is provided.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: January 26, 2016
    Assignee: U.S. Department of Energy
    Inventors: David Luebke, Hunaid Nulwala, Chau Tang
  • Publication number: 20150114226
    Abstract: Methods and compositions useful, for example, for physical solvent carbon capture. A method comprising: contacting at least one first composition comprising carbon dioxide with at least one second composition to at least partially dissolve the carbon dioxide of the first composition in the second composition, wherein the second composition comprises at least one siloxane compound which is covalently modified with at least one non-siloxane group comprising at least one heteroatom. Polydimethylsiloxane (PDMS) materials and ethylene-glycol based materials have high carbon dioxide solubility but suffer from various problems. PDMS is hydrophobic but suffers from low selectivity. Ethylene-glycol based systems have good solubility and selectivity, but suffer from high affinity to water. Solvents were developed which keep the desired combinations of properties, and result in a simplified, overall process for carbon dioxide removal from a mixed gas stream.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Hunaid NULWALA, David LUEBKE
  • Patent number: 8912303
    Abstract: Methods and compositions relating to poly(hydroxyl urethane) compounds are described herein that are useful as, among other things, binders and adhesives. The cross-linked composition is achieved through the reaction of a cyclic carbonate, a compound having two or more thiol groups, and a compound having two or more amine functional groups. In addition, a method of adhesively binding two or more substrates using the cross-linked composition is provided.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: December 16, 2014
    Assignee: U.S. Department of Energy
    Inventors: David Luebke, Hunaid Nulwala, Chau Tang
  • Patent number: 8907105
    Abstract: The present invention relates to compositions of matter that are ionic liquids, the compositions comprising substituted 1,2,3-triazolium cations combined with any anion. Compositions of the invention should be useful in the separation of gases and, perhaps, as catalysts for many reactions.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: December 9, 2014
    Assignee: U.S. Department of Energy
    Inventors: David Luebke, Hunaid Nulwala, Chau Tang
  • Publication number: 20140182784
    Abstract: Methods and compositions relating to poly(hydroxyl urethane) compounds are described herein that are useful as, among other things, binders and adhesives. The cross-linked composition is achieved through the reaction of a cyclic carbonate, a compound having two or more thiol groups, and a compound having two or more amine functional groups. In addition, a method of adhesively binding two or more substrates using the cross-linked composition is provided.
    Type: Application
    Filed: February 3, 2014
    Publication date: July 3, 2014
    Inventors: David Luebke, Hunaid Nulwala, Chau Tang
  • Publication number: 20130310569
    Abstract: A method of synthesizing an ionic liquid, includes reacting a 1,2,3-triazole including at least one of a 4-substituent or a 5-substituent with a hydroxide compound having the formula R+OH? in a dehydration reaction, wherein R+ is an ionic liquid cation. R+ is a five-membered heterocyclic cation, an aromatic cation, a sulfonium cation, an ammonium cation, or a phosphonium cation. In a number of embodiments, R+ is a pyridinium cation, a bipyridinium cation, an amino pyridinium cation, a pyridazinium cation, an ozaxolium cation, a pyrazolium cation, an imidazolium cation, a pyramidinium cation, a triazolium cation, a thiazolium cation, an acridinium cation, a quinolinium cation, an isoquinolinium cation, an orange-acridinium cation, a benzotriazolium cation, a methimzolium cation, a sulfonium cation, an ammonium cation, or a phosphonium cation.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 21, 2013
    Inventors: Hunaid Nulwala, Robert Thompson, David Luebke, Erik Albenze
  • Patent number: 8035236
    Abstract: A semiconductor device comprising curable polyorganosiloxane composites is provided where the composites contain at least 0.1 wt % of the 4th and/or 13th group elements of the periodic table. The cured polyorganosiloxane composites may be catalyst-free, have increased stability, and can be used as encapsulation resin at a temperature far lower than 300° C., have excellent light transmission properties (colorless transparency) in a wavelength region of from ultraviolet light to visible light, light resistance, heat resistance, resistance to moist heat and UV resistance, and has excellent adhesiveness toward metal, ceramics, and plastic surfaces over a long period of time.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: October 11, 2011
    Assignees: The Regents of the University of California, Mitsubishi Chemical Corporation
    Inventors: Craig J. Hawker, Hunaid Nulwala, Anika A. Odukale, Jeffrey A. Gerbec, Kenichi Takizawa
  • Publication number: 20110147722
    Abstract: A semiconductor light emitting device comprising curable polyorganosiloxane compositions is provided where the compositions contain a 13th group elements of the periodic table. The cured polyorganosiloxane compositions may be catalyst-free, have increased stability, and can be used as encapsulation resin at a temperature far lower than 300° C., have excellent light transmission properties (colorless transparency) in a wavelength region of from ultraviolet light to visible light, light resistance heat resistance, resistance to moist heat and UV resistance, and has excellent adhesiveness toward metal, ceramics, and plastic surfaces over a long period of time.
    Type: Application
    Filed: November 22, 2010
    Publication date: June 23, 2011
    Inventors: Craig J. Hawker, Hunaid Nulwala, Anika A. Odukale, Taegon Kang, Jeffrey A. Gerbec, Kenichi Takizawa
  • Publication number: 20110089580
    Abstract: A semiconductor device comprising curable polyorganosiloxane composites is provided where the composites contain at least 0.1 wt % of the 4th and/or 13th group elements of the periodic table. The cured polyorganosiloxane composites may be catalyst-free, have increased stability, and can be used as encapsulation resin at a temperature far lower than 300° C., have excellent light transmission properties (colorless transparency) in a wavelength region of from ultraviolet light to visible light, light resistance, heat resistance, resistance to moist heat and UV resistance, and has excellent adhesiveness toward metal, ceramics, and plastic surfaces over a long period of time.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 21, 2011
    Inventors: Craig J. Hawker, Hunaid Nulwala, Anika A. Odukale, Jeffrey A. Gerbec, Kenichi TAKIZAWA
  • Patent number: 6682604
    Abstract: A method of restoring a contaminated polymer article including contacting a contaminated polymer article with an oil which is not a plasticizer under conditions effective to remove substantially all contaminants present on the polymer article to produce a restored polymer article.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: January 27, 2004
    Assignee: Rochester Institute of Technology
    Inventor: Hunaid Nulwala