Patents by Inventor Christopher W. Bielawski

Christopher W. Bielawski 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: 11417516
    Abstract: Provided is a dielectric layer that has a rock salt structure in a room temperature stable phase. The dielectric layer is made of a compound having a chemical formula of BexM1-xO, where M includes one of alkaline earth metals and x has a value greater than 0 and not greater than 0.19. A semiconductor memory device also is provided that includes a capacitor composed of a lower electrode; a dielectric layer disposed on the lower electrode; and an upper electrode disposed on the dielectric layer, wherein the dielectric layer has a rocksalt structure in a room temperature stable phase and is made of a compound having a chemical formula shown below, BexM1-xO, where M comprises an alkaline earth metal and x has a value greater than 0 and not greater than 0.19.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: August 16, 2022
    Assignee: Korea Institute of Science and Technology
    Inventors: Seong Keun Kim, Woo Chui Lee, Sang Tae Kim, Hyun Cheol Song, Seung Hyub Baek, Ji Won Choi, Jin Sang Kim, Chong Yun Kang, Christopher W. Bielawski, Jung Hwan Yum, Eric S. Larsen
  • Publication number: 20190333858
    Abstract: Provided is a dielectric layer that has a rock salt structure in a room temperature stable phase. The dielectric layer is made of a compound having a chemical formula of BexM1-xO, where M includes one of alkaline earth metals and x has a value greater than 0 and less than 0.5.
    Type: Application
    Filed: December 19, 2018
    Publication date: October 31, 2019
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, INSTITUTE FOR BASIC SCIENCE, ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seong Keun KIM, Woo Chul LEE, Sang Tae KIM, Hyun Cheol SONG, Seung Hyub BAEK, Ji Won CHOI, Jin Sang KIM, Chong Yun KANG, Christopher W. BIELAWSKI, Jung Hwan YUM, Eric S. LARSEN
  • Publication number: 20180320987
    Abstract: Sugar alcohol blends of galactitol and mannitol and compositions comprising such blends are disclosed as phase change materials (PCMs). A method of forming carbon nanotubes on a carbon substrate is described. Carbon substrates with carbon nanotubes, in particular, conformal layers of carbon nanotubes on carbon substrates, are also disclosed, as are methods of making and using these materials. Thermal storage units are also provided. The thermal storage units can comprise a heat exchange path through which a heat exchange medium flows, and a thermal storage medium in thermal contact with the heat exchange path.
    Type: Application
    Filed: July 9, 2018
    Publication date: November 8, 2018
    Inventors: Alexandre K. Da Silva, Evan Fleming, Li Shi, Christopher W. Bielawski, Rodney S. Ruoff, Shaoyi Wen, Hengxing Ji, Michael Pettes, Abhijit Paul, Eunsu Paek, Alexander J. Pak, Daniel P. Sellan
  • Patent number: 9983327
    Abstract: A magnetic nanoparticle suitable for imaging a geological structure having one or more magnetic metal or metal oxide nanoparticles with a polymer grafted to the surface to form a magnetic nanoparticle, wherein the magnetic nanoparticle displays a colloidal stability under harsh salinity conditions or in a standard API brine.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: May 29, 2018
    Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Keith P. Johnston, Christopher W. Bielawski, Hitesh G. Bagaria, Ki Youl Yoon, Bethany M. Neilson, Chun Huh, Steven L. Bryant, Edward Lee Foster, Zheng Xue, Lynn Michelle Foster
  • Patent number: 9585910
    Abstract: Polymeric compounds containing polymer backbones functionalized with ion-specific recognition elements and methods for the use of these compounds are described herein. The polymeric compounds may contain multiple types of ion-specific recognition elements depending on a specific application. The polymeric compounds can be used to remove ionic species from a solution, for example, in separations applications in which a single or multiple types of ionic species are desired to be removed from the solution.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: March 7, 2017
    Assignee: Board of Regents, The University of Texas System
    Inventors: Jonathan L. Sessler, Christopher W. Bielawski, Abdullah Aydogan, Daniel J. Coady
  • Publication number: 20160209124
    Abstract: Sugar alcohol blends of galactitol and mannitol and compositions comprising such blends are disclosed as phase change materials (PCMs). A method of forming carbon nanotubes on a carbon substrate is described. Carbon substrates with carbon nanotubes, in particular, conformal layers of carbon nanotubes on carbon substrates, are also disclosed, as are methods of making and using these materials. Thermal storage units are also provided. The thermal storage units can comprise a heat exchange path through which a heat exchange medium flows, and a thermal storage medium in thermal contact with the heat exchange path.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 21, 2016
    Inventors: Alexandre K. DA SILVAa, Evan FLEMING, Li SHI, Christopher W. BIELAWSKI, Rodney S. RUOFF, Shaoyi WEN, Hengxing JI, Michael PETTES, Abhijit PAUL, Eunsu PAEK, Alexander J. PAK, Daniel P. SELLAN
  • Publication number: 20150268370
    Abstract: A magnetic nanoparticle suitable for imaging a geological structure having one or more magnetic metal or metal oxide nanoparticles with a polymer grafted to the surface to form a magnetic nanoparticle, wherein the magnetic nanoparticle displays a colloidal stability under harsh salinity conditions or in a standard API brine.
    Type: Application
    Filed: October 25, 2013
    Publication date: September 24, 2015
    Inventors: Keith P. Johnston, Christopher W. Bielawski, Hitesh G. Bagaria, Ki Youl Yoon, Bethany M. Neilson, Chun Huh, Steven L. Bryant, Edward Lee Foster, Zheng Xue, Lynn Michelle Foster
  • Publication number: 20150086501
    Abstract: Polymeric compounds containing polymer backbones functionalized with ion-specific recognition elements and methods for the use of these compounds are described herein. The polymeric compounds may contain multiple types of ion-specific recognition elements depending on a specific application. The polymeric compounds can be used to remove ionic species from a solution, for example, in separations applications in which a single or multiple types of ionic species are desired to be removed from the solution.
    Type: Application
    Filed: July 29, 2014
    Publication date: March 26, 2015
    Inventors: Jonathan L. Sessler, Christopher W. Bielawski, Abdullah Aydogan, Daniel J. Coady
  • Publication number: 20150025289
    Abstract: The disclosure relates to catalytically active carbocatalysts, e.g., a graphene oxide or graphite oxide catalyst suitable for use in production of propene.
    Type: Application
    Filed: May 23, 2012
    Publication date: January 22, 2015
    Applicant: Graphea, Inc.
    Inventors: Christopher W. Bielawski, Daniel R. Dreyer, Richard Miller
  • Publication number: 20140275684
    Abstract: The disclosure relates to catalytically active carbocatalysts, e.g., a graphene oxide or graphite oxide catalyst suitable for use in a variety of high value chemical transformations.
    Type: Application
    Filed: May 23, 2012
    Publication date: September 18, 2014
    Applicant: Graphea, Inc.
    Inventors: Christopher W. Bielawski, Daniel R. Dreyer, Richard Miller
  • Patent number: 8802074
    Abstract: Polymeric compounds containing polymer backbones functionalized with ion-specific recognition elements and methods for the use of these compounds are described herein. The polymeric compounds may contain multiple types of ion-specific recognition elements depending on a specific application. The polymeric compounds can be used to remove ionic species from a solution, for example, in separations applications in which a single or multiple types of ionic species are desired to be removed from the solution.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: August 12, 2014
    Assignee: Board of Regents, The University of Texas System
    Inventors: Jonathan L. Sessler, Christopher W. Bielawski, Abdullah Aydogan, Daniel J. Coady
  • Publication number: 20140011972
    Abstract: Provided herein are novel processes for synthesis of polymers and/or polymer composites.
    Type: Application
    Filed: February 7, 2012
    Publication date: January 9, 2014
    Applicant: GRAPHEA, INC.
    Inventors: Christopher W. Bielawski, Daniel R. Dreyer
  • Publication number: 20130149211
    Abstract: A carbocatalyst for use in oxidation and polymerization reactions includes particles having a carbon and oxygen-containing material, such as catalytically-active graphene oxide and/or catalytically-active graphite oxide. In some cases, the particles are disposed on a solid support formed of a carbon-containing material, such as graphene or graphite, or a non-carbon containing material, such as a metallic or insulating material.
    Type: Application
    Filed: May 27, 2011
    Publication date: June 13, 2013
    Applicant: GRAPHEA, INC.
    Inventors: Christopher W. Bielawski, Daniel R. Dreyer
  • Publication number: 20130123514
    Abstract: The disclosure relates to catalytically active carbocatalysts, e.g., a graphene oxide or graphite oxide catalyst suitable for use in a variety of chemical transformations. In one embodiment, it relates to a method of catalyzing a chemical reaction of an organic molecule by reacting the organic molecule in the presence of a sufficient amount of graphene oxide or graphite oxide for a time and at a temperature sufficient to allow catalysis of a chemical reaction. According to other embodiments, the reaction may be an oxidation reaction, a hydration reaction, a dehydrogenation reaction, a condensation reaction, or a polymerization reaction. Some reactions may include auto-tandem reactions. The disclosure further provides reaction mixtures containing an organic molecule and graphene oxide or graphite oxide in an amount sufficient to catalyze a reaction of the organic molecule.
    Type: Application
    Filed: May 27, 2011
    Publication date: May 16, 2013
    Applicant: GRAPHEA, INC.
    Inventors: Christopher W. Bielawski, Daniel R. Dreyer, Hong-Peng Jia
  • Publication number: 20120111791
    Abstract: The present invention includes methods and compositions for liquid separation and water purification. The present invention includes a purification membrane having a polymer matrix purification membrane that has been treated with hydroquinone, catechol, and/or dopamine coated membrane with a high water flux.
    Type: Application
    Filed: November 4, 2010
    Publication date: May 10, 2012
    Applicant: Board of Regents, The University of Texas System
    Inventors: Benny D. Freeman, Daniel J. Miller, Bryan D. McCloskey, Christopher W. Bielawski, Daniel R. Dreyer
  • Publication number: 20110080689
    Abstract: One embodiment of the current disclosure provides an ultracapacitor including at least one graphene-based electrode, an electrolyte containing an ionic liquid, and a dielectric separator dividing the ultracapacitor into two chambers, each chamber containing an electrode and a portion of the electrolyte. In another embodiment, the graphene has been expanded by exposure to microwave radiation then chemically activated. Another embodiment of the current disclosure provides an electrochemical energy storage device containing such an ultracapacitor. Still other embodiments of the disclosure relate to ionic liquids, some of which may be suitable for use in an ultracapacitor, methods of synthesizing such liquids, and methods of designing such liquids. Further embodiments relate to methods of using ultracapacitors, for example in automobiles, power grids, high-temperature applications, and other applications.
    Type: Application
    Filed: September 3, 2010
    Publication date: April 7, 2011
    Inventors: Christopher W. Bielawski, Rodney S. Ruoff, Dileep K. Agnihotri, Daniel R. Dreyer, Meryl D. Stoller, Yanwu Zhu
  • Publication number: 20100129308
    Abstract: Polymeric compounds containing polymer backbones functionalized with ion-specific recognition elements and methods for the use of these compounds are described herein. The polymeric compounds may contain multiple types of ion-specific recognition elements depending on a specific application. The polymeric compounds can be used to remove ionic species from a solution, for example, in separations applications in which a single or multiple types of ionic species are desired to be removed from the solution.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 27, 2010
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Jonathan L. Sessler, Christopher W. Bielawski, Abdullah Aydogan, Daniel J. Coady
  • Patent number: 6696536
    Abstract: The invention discloses a method for preparing a triblock copolymer of the formula: comprising: (a) contacting a cycloalkene with a chain transfer agent of the formula: Z—Y═Y—Z  in the presence of a metal carbene metathesis catalyst to form a telechelic polymer; and (d) contacting the telechelic polymer with an alkene of the formula  in the presence of an ATRP organometallic catalyst wherein n and m are integers; Z is an ATRP initiator and —Y═Y— is an alkenyl group; and, R′ is selected from the group consisting of aryl, nitrile and C1-C20 carboxylate, wherein R′ is substituted or unsubstituted. The invention also discloses a method for preparing a diblock copolymer. In addition, the invention encompasses a triblock copolymer having no 1,2-PBD structure in the PBD portion of the copolymer.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: February 24, 2004
    Assignee: California Institute of Technology
    Inventors: Robert H. Grubbs, Christopher W. Bielawski
  • Publication number: 20030151825
    Abstract: The invention relates to novel, light adjustable optical elements. The optical elements contain an acrylate-based modifying composition which is capable of stimulus-induced polymerization. Novel telechelic acrylate polymers are also disclosed.
    Type: Application
    Filed: December 23, 2002
    Publication date: August 14, 2003
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Christopher W. Bielawski, Jagdish M. Jethmalani, Robert H. Grubbs, Julia A. Kornfield
  • Publication number: 20030013825
    Abstract: The invention discloses a method for preparing a triblock copolymer of the formula: 1
    Type: Application
    Filed: May 20, 2002
    Publication date: January 16, 2003
    Applicant: California Institute of Technology
    Inventors: Robert H. Grubbs, Christopher W. Bielawski