Patents by Inventor Bhagya Chandra Sutradhar

Bhagya Chandra Sutradhar 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: 20150104862
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising: adding one or more carbonaceous materials, adding a molecular oxygen-containing gas, adding carbon dioxide gas and optionally adding water into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Application
    Filed: October 10, 2013
    Publication date: April 16, 2015
    Applicant: INEOS USA LLC
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan Ko
  • Patent number: 8999021
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising: adding one or more carbonaceous materials, adding a molecular oxygen-containing gas, adding a methane-containing gas and optionally adding water or steam into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: April 7, 2015
    Assignee: Ineos USA LLC
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan Ko
  • Patent number: 8658817
    Abstract: The present invention comprises a method for preparing a mixed oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation in a gaseous phase via methods of contacting any one of the antimony compound, the molybdenum compound, and the vanadium compound with hydrogen peroxide prior to combining with source compounds for the remaining elements in the catalyst.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: February 25, 2014
    Assignee: INEOS USA LLC
    Inventors: Charles J. Besecker, Bhagya Chandra Sutradhar, Mark A. Toft, James F. Brazdil, Muin S. Haddad, Christos Paparizos, Michael J. Seely
  • Publication number: 20140038278
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising adding a molecular oxygen-containing gas and optionally adding water into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 6, 2014
    Applicant: INEOS USA LLC
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan KO
  • Patent number: 8585789
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising: adding one or more carbonaceous materials, adding a molecular oxygen-containing gas, adding carbon dioxide gas and optionally adding water into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: November 19, 2013
    Assignee: INEOS USA LLC
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan Ko
  • Patent number: 8580152
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising adding a molecular oxygen-containing gas and optionally adding water into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: November 12, 2013
    Assignee: INEOS USA LLC
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan Ko
  • Publication number: 20110250662
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising: adding one or more carbonaceous materials, adding a molecular oxygen-containing gas, adding carbon dioxide gas and optionally adding water into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 13, 2011
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan Ko
  • Publication number: 20110250661
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising: adding one or more carbonaceous materials, adding a molecular oxygen-containing gas, adding a methane-containing gas and optionally adding water or steam into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 13, 2011
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan Ko
  • Publication number: 20110248218
    Abstract: The present disclosure is generally directed to process of gasification of carbonaceous materials to produce synthesis gas or syngas. The present disclosure provides improved methods of gasification comprising adding a molecular oxygen-containing gas and optionally adding water into said gasifier. This disclosure is also directed to process of production of one or more alcohols from said syngas via fermentation or digestion in the presence of at least one microorganism.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 13, 2011
    Inventors: Bhagya Chandra Sutradhar, Ching-Whan Ko
  • Publication number: 20110218352
    Abstract: The present invention comprises a method for preparing a mixed oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation in a gaseous phase via methods of contacting any one of the antimony compound, the molybdenum compound, and the vanadium compound with hydrogen peroxide prior to combining with source compounds for the remaining elements in the catalyst.
    Type: Application
    Filed: July 28, 2009
    Publication date: September 8, 2011
    Inventors: Charles J. Besecker, Bhagya Chandra Sutradhar, Mark A. Toft, James F. Brazdil, Muin S. Haddad, Christos Paparizos, Michael J. Seely
  • Patent number: 7919428
    Abstract: The present invention comprises a method for preparing a mixed oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutene by ammoxidation in a gaseous phase via methods of heating or calcining precursor solid mixture to obtain mixed metal oxide catalyst compositions that exhibit catalytic activity.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: April 5, 2011
    Assignee: Ineos USA LLC
    Inventors: Bhagya Chandra Sutradhar, Thomas L. Szabo, Muin S. Haddad, Mark A. Toft, Christos Paparizos, Lina K. Bodiwala
  • Patent number: 7754910
    Abstract: A process for the ammoxidation of a saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon to produce an unsaturated nitrile, said process comprising contacting the saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon with ammonia and an oxygen-containing gas in the presence of a catalyst composition comprising molybdenum, vanadium, antimony, niobium, tellurium, optionally at least one element select from the group consisting of titanium, tin, germanium, zirconium, hafnium, and optionally at least one lanthanide selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. Such catalysts are characterized by very low levels of tellurium in the composition. Such catalyst compositions are effective for the gas-phase conversion of propane to acrylonitrile and isobutane to methacrylonitrile (via ammoxidation).
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: July 13, 2010
    Assignee: Ineos USA LLC
    Inventors: Claus G. Lugmair, Steven Alan Cohen, Gerry W. Zajac, Alakananda Bhattacharyya, Bhagya Chandra Sutradhar, James F. Brazdil, Jr.
  • Publication number: 20090198081
    Abstract: A process for the ammoxidation of a saturated or unsaturated hydrocarbon to form an unsaturated nitrile, the process including the steps of contacting the hydrocarbon with ammonia, an oxygen-containing gas, and steam, in the presence of a mixed oxide catalyst.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Inventors: CHRISTOS PAPARIZOS, Bhagya Chandra Sutradhar, Michael J. Seely, James F. Brazdil, JR., Alakananda Bhattacharyya
  • Publication number: 20090142254
    Abstract: The present invention comprises a method for preparing a mixed oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutene by ammoxidation in a gaseous phase via methods of heating or calcining precursor solid mixture to obtain mixed metal oxide catalyst compositions that exhibit catalytic activity.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 4, 2009
    Inventors: Bhagya CHANDRA Sutradhar, Thomas L. Szabo, Muin S. Haddad, Mark A. Toft, Christos Paparizos, Lina K. Bodiwala
  • Publication number: 20080248947
    Abstract: Catalytic compositions and processes are disclosed for economical conversions of lower alkane hydrocarbons. Broadly, the present invention discloses solid promoter treated compositions containing mixed metal oxides that exhibit catalytic activity for ammoxidation of lower alkane hydrocarbons to produce an unsaturated nitrile in high yield. Generally, these solid oxide compositions comprise, as component elements, molybdenum (Mo), vanadium (V) niobium (Nb) and at least one active element selected from the group consisting of the elements having the ability to form positive ions. Mixed metal oxide catalytic compositions advantageously are formed process steps comprising impregnation of a base catalyst with an aqueous medium comprising sources of one or more promoter element drying the resulting material; and thereafter subjecting the dried material to heat treatment, under a gaseous atmosphere that is substantially free of dioxygen, at elevated temperatures of at least 400° C.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 9, 2008
    Inventors: Gerry W. Zajac, Alakananda Bhattacharyya, Bhagya Chandra Sutradhar, James F. Brazdil
  • Publication number: 20080200716
    Abstract: A process for the ammoxidation of a saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon to produce an unsaturated nitrile, said process comprising contacting the saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon with ammonia and an oxygen-containing gas in the presence of a catalyst composition comprising molybdenum, vanadium, antimony, niobium, tellurium, optionally at least one element select from the group consisting of titanium, tin, germanium, zirconium, hafnium, and optionally at least one lanthanide selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. Such catalysts are characterized by very low levels of tellurium in the composition. Such catalyst compositions are effective for the gas-phase conversion of propane to acrylonitrile and isobutane to methacrylonitrile (via ammoxidation).
    Type: Application
    Filed: January 29, 2008
    Publication date: August 21, 2008
    Inventors: Claus G. Lugmair, Steven Alan Cohen, Gerry W. Zajac, Alakananda Bhattacharyya, Bhagya Chandra Sutradhar, James F. Brazdil
  • Patent number: 6946572
    Abstract: Process for crystallization of adipic acid from a nitric acid oxidation product of cyclohexane in which process the oxidation product is subject to crystallization in a series of crystallizers of decreasing crystallization temperature.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: September 20, 2005
    Assignee: Invista North America S.a.r.l.
    Inventor: Bhagya Chandra Sutradhar
  • Patent number: 6946571
    Abstract: Process for drying moist, solid adipic acid using at least two drying stages in which moist solid adipic acid is progressively dried by contacting it in at least two successive stages with a nonreactive gas, the temperature of the first stage being lower than the temperature in any of the subsequent stages.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: September 20, 2005
    Assignee: Invista North America S.A.R.L.
    Inventor: Bhagya Chandra Sutradhar
  • Patent number: 6814867
    Abstract: Disclosed herein is a process for reducing or substantially eliminating chromium in non-volatile residue obtained from a certain processes, and particularly from cyclohexane oxidation processes.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: November 9, 2004
    Assignee: Inuista North America S.à.r.l.
    Inventors: Ludovic Fodor, Bennett Haines Novak, Jules Charles Joseph Perilloux, Jr., Bhagya Chandra Sutradhar
  • Publication number: 20040054235
    Abstract: Disclosed herein is a process for the production of a mixture of cyclohexanone and cyclohexanol by oxidation of cyclohexane and decomposition of cyclohexyl hydroperoxide.
    Type: Application
    Filed: September 12, 2002
    Publication date: March 18, 2004
    Inventors: Ludovic Fodor, Bhagya Chandra Sutradhar