Patents by Inventor Patrick H. Au-Yeung

Patrick H. Au-Yeung 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: 9745233
    Abstract: A process for converting tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: August 29, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Michael Lee Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 9512057
    Abstract: Methods and systems for producing high purity 3-hydroxypropionic acid (3-HP) from an aqueous medium, such as a fermentation broth, are described. Aqueous 3-HP solution can be purified by flash evaporation wherein the 3-HP is vaporized at an elevated temperature without conversion to acrylic acid. This process can be integrated with downstream processes for producing other chemical and consumer products.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 6, 2016
    Assignees: Cargill, Incorporated, Dow Global Technologies LLC
    Inventors: Cindy Hoppe, Sarah M. Hoyt, Robert Tengler, David DeCoster, Bradley Harkrader, Patrick H. Au-Yeung, Sanjib Biswas, Pedro R. Vargas, II, Raymond P. Roach, Timothy Charles Frank
  • Publication number: 20150353453
    Abstract: A process for converting tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Application
    Filed: July 28, 2015
    Publication date: December 10, 2015
    Inventors: Michael Lee Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 9139500
    Abstract: A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 22, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Michael Lee Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 9126886
    Abstract: A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 8, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Michael Lee Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Publication number: 20150057455
    Abstract: Methods and systems for producing high purity 3-hydroxypropionic acid (3-HP) from an aqueous medium, such as a fermentation broth, are described. Aqueous 3-HP solution can be purified by flash evaporation wherein the 3-HP is vaporized at an elevated temperature without conversion to acrylic acid. This process can be integrated with downstream processes for producing other chemical and consumer products.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 26, 2015
    Inventors: Cindy HOPPE, Sarah M. HOYT, Robert TENGLER, David DeCOSTER, Bradley HARKRADER, Patrick H. AU-YEUNG, Sanjib BISWAS, Pedro R. VARGAS, II, Raymond P. ROACH, Timothy Charles FRANK
  • Patent number: 8581012
    Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: November 12, 2013
    Assignee: Dow Global Technologies, LLC
    Inventors: Max M. Tirtowidjojo, Patrick H. Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, Jr., Thomas U. Luebbe, Holger Meemann, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
  • Publication number: 20130206579
    Abstract: A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 15, 2013
    Applicant: Dow AgroSciences LLC
    Inventors: Michael L. Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Publication number: 20130206578
    Abstract: A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 15, 2013
    Applicant: Dow AgroSciences LLC
    Inventors: Michael L. Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 8449729
    Abstract: A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: May 28, 2013
    Assignee: Dow AgroSciences, LLc
    Inventors: Michael L. Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 8123843
    Abstract: The present invention relates to an apparatus comprising a co-current absorbing unit, a countercurrent absorbing unit, at least one absorbing liquid reservoir, and at least one liquid transferring means. The invention also relates to a method of absorbing a reactive gas and a method of preparing a solution by contacting a reactive gas to a solvent and allowing the reactive gas to react with the solvent.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: February 28, 2012
    Inventors: Patrick H. Au-Yeung, Dennis W. Jewell, John G. Pendergast, Jr.
  • Publication number: 20110087055
    Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES
    Inventors: Max M. Tirtowidjojo, Patrick H. Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas U. Luebbe, Holger Meeman, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
  • Publication number: 20110005914
    Abstract: A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Application
    Filed: June 24, 2010
    Publication date: January 13, 2011
    Inventors: Michael L. Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 7696398
    Abstract: A process of stabilizing an olefin metathesis product mixture, preferably, against double bond isomerization and thermal and chemical degradation. The process involves (a) contacting an olefin metathesis product mixture comprising one or more olefins produced in a metathesis process, a metathesis catalyst comprising a catalytic metal and one or more ligands, optionally, one or more metathesis catalyst degradation products, and optionally, one or more metals derived from sources other than the catalyst or catalyst degradation product(s), with an adsorbent, more preferably carbon; or alternatively, (b) subjecting the olefin metathesis product mixture to a two-step distillation, preferably, including short path wiped-film evaporation. A stabilized olefin metathesis product mixture to a two-step distillation, preferably, including short path wiped-film evaporation.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: April 13, 2010
    Assignee: Dow GlobalTTechnologies, Inc.
    Inventors: Kenneth A. Burdett, Rob R. Maughon, Patrick H. Au-Yeung
  • Publication number: 20090104099
    Abstract: The present invention relates to an apparatus comprising a co-current absorbing unit, a countercurrent absorbing unit, at least one absorbing liquid reservoir, and at least one liquid transferring means. The invention also relates to a method of absorbing a reactive gas and a method of preparing a solution by contacting a reactive gas to a solvent and allowing the reactive gas to react with the solvent.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 23, 2009
    Inventors: Patrick H. Au-Yeung, Dennis W. Jewell, John G. Pendergast, JR.