Patents by Inventor James S. Hrabal

James S. Hrabal 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: 10456738
    Abstract: The present invention relates to methods of separating one or more components from a feed composition, methods of desorbing one or more components from an absorbent fluid, as well as systems and apparatus that can carry out the methods. In one embodiment, the present invention provides a method of separating one or more components from a feed composition including contacting at least some of a first component of a feed composition including the first component with an absorbent fluid, to provide a contacted composition and a used absorbent fluid including at least some of the first component contacted with the absorbent fluid. In some embodiments the absorbent fluid can be an organosilicon fluid including an organosilicon including at least one of a hydroxy group, an ether group, an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, and a polyether group.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: October 29, 2019
    Assignee: Dow Silicones Corporation
    Inventors: Dongchan Ahn, Aaron J. Greiner, James S. Hrabal, Alexandra N. Lichtor
  • Patent number: 9957364
    Abstract: Various embodiments disclosed related to modified elastomer surfaces and methods of making and using the same. In various embodiments, the present invention provides a method of modifying the surface of an elastomer. The method can include contacting a polymerizable composition and at least part of a surface of an elastomer. The polymerizable composition can include a free-radical polymerizable monomers, an organoborane-organonitrogen free-radical initiator, and an amine-reactive compound. The method can include at least partially polymerizing the polymerizable composition, to provide a polymerization product of the polymerizable composition on the surface of the elastomer.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: May 1, 2018
    Assignee: DOW CORNING CORPORATION
    Inventors: Dongchan Ahn, James S Hrabal, Christopher L Wong
  • Publication number: 20180078894
    Abstract: The present invention relates to methods of separating one or more components from a feed composition, methods of desorbing one or more components from an absorbent fluid, as well as systems and apparatus that can carry out the methods. In one embodiment, the present invention provides a method of separating one or more components from a feed composition including contacting at least some of a first component of a feed composition including the first component with an absorbent fluid, to provide a contacted composition and a used absorbent fluid including at least some of the first component contacted with the absorbent fluid. In some embodiments the absorbent fluid can be an organosilicon fluid including an organosilicon including at least one of a hydroxy group, an ether group, an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, and a polyether group.
    Type: Application
    Filed: November 1, 2017
    Publication date: March 22, 2018
    Inventors: Dongchan Ahn, Aaron J. Greiner, James S. Hrabal, Alexandra N. Lichtor
  • Patent number: 9833737
    Abstract: The present invention relates to methods of separating one or more components from a feed composition, methods of desorbing one or more components from an absorbent fluid, as well as systems and apparatus that can carry out the methods. In one embodiment, the present invention provides a method of separating one or more components from a feed composition including contacting at least some of a first component of a feed composition including the first component with an absorbent fluid, to provide a contacted composition and a used absorbent fluid including at least some of the first component contacted with the absorbent fluid. In some embodiments the absorbent fluid can be an organosilicon fluid including an organosilicon including at least one of a hydroxy group, an ether group, an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, and a polyether group.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: December 5, 2017
    Assignee: Dow Corning Corporation
    Inventors: Dongchan Ahn, Aaron J. Greiner, James S. Hrabal, Alexandra N. Lichtor
  • Publication number: 20170002159
    Abstract: Various embodiments disclosed related to modified elastomer surfaces and methods of making and using the same. In various embodiments, the present invention provides a method of modifying the surface of an elastomer. The method can include contacting a polymerizable composition and at least part of a surface of an elastomer. The polymerizable composition can include a free-radical polymerizable monomers, an organoborane-organonitrogen free-radical initiator, and an amine-reactive compound. The method can include at least partially polymerizing the polymerizable composition, to provide a polymerization product of the polymerizable composition on the surface of the elastomer.
    Type: Application
    Filed: December 11, 2014
    Publication date: January 5, 2017
    Inventors: Dongchan Ahn, James S Hrabal, Chirstopher L Wongg
  • Publication number: 20160023158
    Abstract: The present invention relates to methods of separating one or more components from a feed composition, methods of desorbing one or more components from an absorbent fluid, as well as systems and apparatus that can carry out the methods. In one embodiment, the present invention provides a method of separating one or more components from a feed composition including contacting at least some of a first component of a feed composition including the first component with an absorbent fluid, to provide a contacted composition and a used absorbent fluid including at least some of the first component contacted with the absorbent fluid. In some embodiments the absorbent fluid can be an organosilicon fluid including an organosilicon including at least one of a hydroxy group, an ether group, an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, and a polyether group.
    Type: Application
    Filed: October 2, 2015
    Publication date: January 28, 2016
    Inventors: Dongchan Ahn, Aaron J. Greiner, James S. Hrabal, Alexandra N. Lichtor
  • Publication number: 20150000522
    Abstract: The present invention relates to hydrosilylation-curable silicone compositions that include an alkenyl-functional trialkylsilane compound. The present invention relates to a membrane including a cured product of the hydrosilylation-curable silicone composition. The present invention also relates to a method of making the membrane, and a method of separating components in a feed mixture using the membrane.
    Type: Application
    Filed: December 27, 2012
    Publication date: January 1, 2015
    Inventors: Dongchan Ahn, James S. Hrabal, Alexandra N. Lichtor
  • Publication number: 20140360367
    Abstract: This invention relates to organopolysiloxane compounds. In some embodiments, the organopolysiloxane compound includes a siloxane unit having at least one trialkylsilyl pendant group attached thereto through an organic group spacer. The present invention also relates to methods of making the organopolysiloxane, a hydrosilylation-curable silicone composition including the organopolysiloxane, a cured product of the silicone composition, a membrane including the cured product, a method of making the membrane, and a method of separating components in a feed mixture using the membrane.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 11, 2014
    Inventors: Dongchan Ahn, James S. Hrabal, Alexandra N. Lichtor
  • Publication number: 20140322519
    Abstract: The present invention relates to a method of treating a surface comprising a silicone elastomer having a plurality of Si—H groups by contacting at least one region of the surface with a solution comprising a surface treatment compound, to give a treated surface with Si—OH, Si—OR, or Si—C groups. The present invention relates to a hydrosilylation-curable silicone composition. In some examples, the hydrosilylation-curable silicone composition includes an organohydrogen-polysiloxane having an average of at least forty silicon-bonded hydrogen atoms per molecule, a cross-linking agent having an average of at least two aliphatic unsaturated carbon-carbon bonds per molecule, and a hydrosilylation catalyst, wherein the mole ratio of silicon-bonded hydrogen atoms in the composition to aliphatic unsaturated carbon-carbon bonds in the composition is at least 20:1. The invention also relates to membranes, methods of making membranes, gas permeable supports for membranes, and methods of gas separation using membranes.
    Type: Application
    Filed: November 8, 2012
    Publication date: October 30, 2014
    Inventors: Dongchan Ahn, James S. Hrabal, Jeong Yong Lee
  • Publication number: 20140150287
    Abstract: Various embodiments of the present invention relate to a method of drying a feed gas mixture. The method includes contacting a first side of one or more membranes with a feed gas mixture. The feed gas mixture includes at least water and a second gas component. Contacting the first side of the one or more membranes with the feed gas mixture produces a permeate gas mixture on a second side of the one or more membranes and a retentate gas mixture on the first side of the one or more membranes. The permeate gas mixture is enriched in water, and the retentate mixture is depleted in water. The one or more membranes have a H2O vapor permeability coefficient of at least about 25,000 Barrer at room temperature. Various embodiments of the present invention relate to a method of drying a material. The method includes contacting a material with the retentate gas mixture, to provide a dried material.
    Type: Application
    Filed: July 13, 2012
    Publication date: June 5, 2014
    Applicant: Dow Corning Corporation
    Inventors: Dongchan Ahn, James S. Hrabal, Aaron J. Greiner
  • Publication number: 20140137736
    Abstract: The present invention relates to silicone compositions that are useful for the production of membranes that are selectively permeable to at least one component of a gas mixture. The invention provides a method of forming the membrane. The invention also provides a method of separating components in a feed mixture using the membrane. The membrane includes a reaction product (e.g. cured product) of a silicone composition including an organopolysiloxane having at least two unsaturated aliphatic carbon-carbon bond-containing groups per molecule; a crosslinking agent having at least two silicon-bonded hydrogen atoms per molecule; a hydrosilylation catalyst; a polyether containing at least one unsaturated aliphatic carbon-carbon bond-containing group; and a siliceous filler.
    Type: Application
    Filed: June 6, 2012
    Publication date: May 22, 2014
    Applicant: Dow Corning Corporation
    Inventors: Dongchan Ahn, Aaron J. Greiner, James S. Hrabal, Christopher Wong
  • Publication number: 20140060324
    Abstract: The present invention relates to a membrane including a reaction product of an epoxy-functional organopolysiloxane and an amino-functional curing agent, wherein the organopolysiloxane has an average of at least two silicon-bonded epoxy-substituted organic groups per molecule and the curing agent has an average of at least two nitrogen-bonded hydrogen atoms per molecule. The invention further relates to a method of separating gas components in a feed gas mixture by use of the membrane.
    Type: Application
    Filed: April 4, 2012
    Publication date: March 6, 2014
    Applicant: Dow Corning Corporation
    Inventors: Dongchan Ahn, Christopher Wong, James S. Hrabal