Patents by Inventor John G. Pendergast

John G. Pendergast 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: 20160060207
    Abstract: A method for producing an amine. The first step is contacting a cyanide, an acid, water and a substrate compound capable of generating a carbonium ion by reaction with the acid to generate a first reaction intermediate. The second step is contacting the first reaction intermediate with water to form a second reaction intermediate. The third step is removing cyanide present in the second reaction intermediate to a concentration less than 10 ppm.
    Type: Application
    Filed: April 2, 2014
    Publication date: March 3, 2016
    Inventors: Bharati D. Chheda, John G. Pendergast, JR., Sivam Rangavajjula, Daniel M. Trauth
  • Patent number: 9192877
    Abstract: Disclosed are a process and an apparatus for concentrating an organic acid by using a nitroalkane as an entrainer for the azeotropic removal of water from an aqueous organic acid solution. The nitroalkane may be the same as a nitroalkane that is the product of a high pressure nitration process that produces nitroalkanes and aqueous organic acid.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: November 24, 2015
    Assignee: ANGUS CHEMICAL COMPANY
    Inventors: Mahesh Ratnakar Sawant, Daniel M. Trauth, John G. Pendergast
  • Patent number: 9133094
    Abstract: Disclosed are processes and apparatuses for concentrating at least one organic acid using an alkyl acetate as an entrainer. The processes and apparatuses may use the same alkyl acetate as an entrainer to concentrate a mixture of organic acids.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: September 15, 2015
    Assignee: ANGUS CHEMICAL COMPANY
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast, Jr.
  • Publication number: 20150174552
    Abstract: An apparatus for continuously manufacturing organometallic compounds is provided where the apparatus has a source of a first reactant stream wherein the first reactant comprises a metal; a source of a second reactant stream; a laminar flow contacting zone for cocurrently contacting the first reactant stream and the second reactant stream; a mixing zone comprising a turbulence-promoting device; and a heat transfer zone.
    Type: Application
    Filed: March 9, 2015
    Publication date: June 25, 2015
    Inventors: Ravindra S. DIXIT, Hua BAI, Curtis D. MODTLAND, Robert A. WARE, John G. PENDERGAST, JR., Christopher P. CHRISTENSON, Deodatta Vinayak SHENAI-KHATKHATE, Artashes AMAMCHYAN, Kenneth M. CROUCH, Robert F. POLCARI
  • Patent number: 9006475
    Abstract: A method of continuously manufacturing organometallic compounds is provided where two or more reactants are conveyed to a reactor having a laminar flow contacting zone, a heat transfer zone, and a mixing zone having a turbulence-promoting device; and causing the reactants to form the organometallic compound.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: April 14, 2015
    Assignees: Rohm and Haas Electronic Materials LLC, Dow Global Technologies LLC
    Inventors: Ravindra S. Dixit, Hua Bai, Curtis D. Modtland, Robert A. Ware, John G. Pendergast, Jr., Christopher P. Christenson, Deodatta Vinayak Shenai-Khatkhate, Artashes Amamchyan, Kenneth M. Crouch, Robert F. Polcari
  • Patent number: 9000243
    Abstract: The present invention relates to a process for separating chlorinated methanes utilizing a dividing wall column. Processes and manufacturing assemblies for generating chlorinated methanes are also provided, as are processes for producing products utilizing the chlorinated methanes produced and/or separated utilizing the present process(es) and/or assemblies.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: April 7, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: John G Pendergast, Jr., William S. White, Anthony R. Avilla, Thomas U Luebbe
  • Publication number: 20140031594
    Abstract: Disclosed are processes and apparatuses for concentrating at least one organic acid using an alkyl acetate as an entrainer. The processes and apparatuses may use the same alkyl acetate as an entrainer to concentrate a mixture of organic acids.
    Type: Application
    Filed: April 5, 2012
    Publication date: January 30, 2014
    Applicants: ANGUS CHEMICAL COMPANY, DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast
  • Publication number: 20130343960
    Abstract: Disclosed is an apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. The apparatus may be designed such that it can synthesize more than one nitroalkane using the same equipment.
    Type: Application
    Filed: August 22, 2013
    Publication date: December 26, 2013
    Applicants: ANGUS CHEMICAL COMPANY, DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast, Ravindra S. Dixit
  • Patent number: 8558039
    Abstract: Disclosed is an apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. The apparatus may be designed such that it can synthesize more than one nitroalkane using the same equipment.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 15, 2013
    Assignees: Dow Global Technologies LLC, ANGUS Chemical Company
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast, Jr., Ravindra S. Dixit
  • Publication number: 20130245340
    Abstract: Disclosed are a process and an apparatus for concentrating an organic acid by using a nitroalkane as an entrainer for the azeotropic removal of water from an aqueous organic acid solution. The nitroalkane may be the same as a nitroalkane that is the product of a high pressure nitration process that produces nitroalkanes and aqueous organic acid.
    Type: Application
    Filed: December 7, 2011
    Publication date: September 19, 2013
    Applicants: ANGUS CHEMICAL COMPANY, DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Mahesh Ratnakar Sawant, Daniel M. Trauth, John G. Pendergast
  • Publication number: 20130216443
    Abstract: Disclosed are a process and an apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. Energy and capital costs may be reduced by recycling a majority of the aqueous phase back to the reactor.
    Type: Application
    Filed: April 1, 2013
    Publication date: August 22, 2013
    Applicants: ANGUS CHEMICAL COMPANY, DOW GLOBAL TECHNOLOGIES INC.
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast
  • Publication number: 20130211118
    Abstract: A method of continuously manufacturing organometallic compounds is provided where two or more reactants are conveyed to a reactor having a laminar flow contacting zone, a heat transfer zone, and a mixing zone having a turbulence-promoting device; and causing the reactants to form the organometallic compound.
    Type: Application
    Filed: August 15, 2012
    Publication date: August 15, 2013
    Applicants: Rohm and Haas Electronic Materials LLC, Dow Global Technologies Inc.
    Inventors: Ravindra S. Dixit, Hua Bai, Curtis D. Modtland, Robert A. Ware, John G. Pendergast, JR., Christopher P. Christenson, Deodatta Vinayak Shenai-Khatkhate, Artashes Amamchyan, Kenneth M. Crouch, Robert F. Polcari
  • Publication number: 20130189164
    Abstract: Disclosed are a process and apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. Energy and capital costs may be reduced by using a dividing wall column.
    Type: Application
    Filed: March 8, 2013
    Publication date: July 25, 2013
    Applicants: ANGUS Chemical Company, Dow Global Technologies Inc.
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast
  • Patent number: 8431754
    Abstract: Disclosed are a process and an apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. Energy and capital costs may be reduced by recycling a majority of the aqueous phase back to the reactor.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: April 30, 2013
    Assignees: Dow Global Technologies LLC, ANGUS Chemical Company
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast, Jr.
  • Patent number: 8410323
    Abstract: Disclosed are a process and apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. Energy and capital costs may be reduced by using a dividing wall column.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: April 2, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Mahesh Sawant, Daniel M. Trauth, John G. Pendergast, Jr.
  • Patent number: 8129436
    Abstract: The present invention provides a method for simplifying manufacture of a mixed alcohol or mixed oxygenate product from synthesis gas. The mixed alcohol or mixed oxygenate product contains ethanol and other oxygenates with two or more carbon atoms per molecule. The method includes stripping a portion of carbon dioxide and inert gases contained in a mixed alcohol synthesis reaction product using a methanol-containing stream, such as one produced as part of the method, as a medium to absorb said carbon dioxide and inert gases and recycling light products and heavy products to one or more of synthesis gas generation, mixed alcohol synthesis and separation of desired mixed alcohol or mixed oxygenate products from other components of a mixed alcohol synthesis stream.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: March 6, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Max M. Tirtowidjojo, Barry B. Fish, Hendrik L. Pelt, Dennis W. Jewell, Mark D. Bearden, John G. Pendergast, Jr., Jon H. Siddall, Brien A. Stears, Haivan D. Tran, Jan W. Verwijs, Aaltje Verwijs-van den Brink, legal representative, Lena Verwijs, legal representative, Hendrika Gerrita Verwijs, legal representative, Richard M. Wehmeyer
  • 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: 20110257445
    Abstract: The present invention relates to a process for separating chlorinated methanes utilizing a dividing wall column. Processes and manufacturing assemblies for generating chlorinated methanes are also provided, as are processes for producing products utilizing the chlorinated methanes produced and/or separated utilizing the present process(es) and/or assemblies.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 20, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: John G. Pendergast, JR., William S. White, Anthony R. Avilla, Thomas U. Luebbe
  • Publication number: 20110178328
    Abstract: The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components. In some embodiments, fractionating an isocyanate feed mixture may comprise distilling the feed mixture in a non-adiabatic fractionating apparatus comprising a prefractionating section and/or column and a main section and/or column, which comprises a rectification section, a side section, and a stripping section. For example, isocyanates may be separated from light component(s), solvent(s) and/or heavier component(s). A fractionating apparatus may be configured and arranged, in some embodiments, as a dividing wall column. According to some embodiments of the disclosure, apparatus, systems, and/or methods may be energy efficient and/or may have a broad operating range.
    Type: Application
    Filed: October 1, 2009
    Publication date: July 21, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Andrei S. Merenov, Luca Balbo, Douglas A. Stallard, John G. Pendergast, Joerg-Peter Gehrke, Amilcar R. Collado, David D. Hibbitts
  • Publication number: 20110172458
    Abstract: The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components. In some embodiments, fractionating an isocyanate feed mixture may comprise distilling the feed mixture in a non-adiabatic fractionating apparatus comprising a prefractionating section and/or column and a main section and/or column, which comprises a rectification section, a side section, and a stripping section. For example, isocyanates may be separated from light component(s), solvent(s) and/or heavier component(s). A fractionating apparatus may be configured and arranged, in some embodiments, as a dividing wall column. According to some embodiments of the disclosure, apparatus, systems, and/or methods may be energy efficient and/or may have a broad operating range.
    Type: Application
    Filed: October 1, 2009
    Publication date: July 14, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Andrei S. Merenov, Luca Balbo, Douglas A. Stallard, John G. Pendergast, JR., Joerg-Peter Gehrke, Amilcar R. Collado, David D. Hibbitts