Patents by Inventor Ranjita Ghose

Ranjita Ghose 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: 10787399
    Abstract: A process for producing phenylstyrene comprises contacting benzene with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation product comprising cyclohexylbenzene. At least part of the cyclohexylbenzene is then contacted with ethylbenzene in the presence of a transalkylation catalyst under conditions effective to produce a transalkylation product comprising cyclohexylethylbenzene and/or with ethylene in the presence of an alkylation catalyst under conditions effective to produce an alkylation product comprising cyclohexylethylbenzene. At least part of the cyclohexylethylbenzene is then contacted with a dehydrogenation catalyst under conditions effective to produce a dehydrogenation product comprising phenylstyrene.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 29, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Salciccioli, Alan A. Galuska, Ranjita Ghose, Doron Levin, Mosha H. Zhao
  • Publication number: 20180258011
    Abstract: A process for producing phenylstyrene comprises contacting benzene with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation product comprising cyclohexylbenzene. At least part of the cyclohexylbenzene is then contacted with ethylbenzene in the presence of a transalkylation catalyst under conditions effective to produce a transalkylation product comprising cyclohexylethylbenzene and/or with ethylene in the presence of an alkylation catalyst under conditions effective to produce an alkylation product comprising cyclohexylethylbenzene. At least part of the cyclohexylethylbenzene is then contacted with a dehydrogenation catalyst under conditions effective to produce a dehydrogenation product comprising phenylstyrene.
    Type: Application
    Filed: October 14, 2016
    Publication date: September 13, 2018
    Inventors: Michael Salciccioli, Alan A. Galuska, Ranjita Ghose, Dorin Levin, Mosha H. Zhao
  • Patent number: 9856186
    Abstract: A process is described for converting at least one isomer of a dialkyl-substituted biphenyl compound, such as at least one 2,X? dialkylbiphenyl isomer (where X? is 2?, 3? and/or 4?), into at least one different isomer, 3,3?, 3,4? and/or 4,4? dialkylbiphenyl isomer. The process comprises contacting a feed comprising the dialkyl-substituted biphenyl compound isomer with an acid catalyst under isomerization conditions.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 2, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Salciccioli, Jihad M. Dakka, Emiel de Smit, Neeraj Sangar, Scott J. Weigel, Sumathy Raman, Terry E. Helton, Lorenzo C. DeCaul, Christine N. Elia, Chuansheng Bai, Ranjita Ghose
  • Patent number: 9695097
    Abstract: This invention relates to a process for producing ethanol comprises supplying a feed comprising carbon monoxide, hydrogen and dimethyl ether to a reaction zone operated under conditions such that (i) part of the carbon monoxide in the feed reacts with part of the hydrogen in the feed to produce methanol; (ii) part of the carbon monoxide in the feed reacts with at least part of the dimethyl ether in the feed to produce methyl acetate; and (iii) part of the hydrogen in the feed reacts with at least part of the methyl acetate produced in (ii) to produce an effluent comprising methanol and ethanol. At least part of the ethanol is recovered from the effluent and at least part of the methanol is dehydrated to produce dimethyl ether, which is recycled to the reaction zone.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: July 4, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Salciccioli, James H. Beech, Jr., Ranjita Ghose, Paul F. Keusenkothen, Meha Rungta
  • Patent number: 9610565
    Abstract: A method for making a metal oxide material and catalyzing the oxidative coupling of methane, including mixing a metal cation-containing oxidizer portion and a reducing fuel portion with water to define an aqueous solution, evaporatively removing water from the aqueous solution to yield a concentrated liquid, burning the concentrated liquid yield an homogeneous metal oxide powder, flowing methane from a first source and oxygen from a second source over the homogeneous metal oxide powder, and catalyzing an oxidative coupling of methane reaction with the homogeneous metal oxide powder. The homogeneous metal oxide powder contains metal oxides selected from the group including LaSrAlO4, LaAlO3, Sr3Al2O6, Na2WO4—Mn/SiO2, and combinations thereof.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: April 4, 2017
    Assignee: Purdue Research Foundation
    Inventors: Ranjita Ghose, Hyun Tae Hwang, Arvind Varma
  • Publication number: 20170022129
    Abstract: This invention relates to a process for producing ethanol comprises supplying a feed comprising carbon monoxide, hydrogen and dimethyl ether to a reaction zone operated under conditions such that (i) part of the carbon monoxide in the feed reacts with part of the hydrogen in the feed to produce methanol; (ii) part of the carbon monoxide in the feed reacts with at least part of the dimethyl ether in the feed to produce methyl acetate; and (iii) part of the hydrogen in the feed reacts with at least part of the methyl acetate produced in (ii) to produce an effluent comprising methanol and ethanol. At least part of the ethanol is recovered from the effluent and at least part of the methanol is dehydrated to produce dimethyl ether, which is recycled to the reaction zone.
    Type: Application
    Filed: June 17, 2016
    Publication date: January 26, 2017
    Inventors: Michael Salciccioli, James H. Beech, JR., Ranjita Ghose, Paul F. Keusenkothen, Meha Rungta
  • Publication number: 20160176785
    Abstract: A process is described for converting at least one isomer of a dialkyl-substituted biphenyl compound, such as at least one 2,X? dialkylbiphenyl isomer (where X? is 2?, 3? and/or 4?), into at least one different isomer, 3,3?, 3,4? and/or 4,4? dialkylbiphenyl isomer. The process comprises contacting a feed comprising the dialkyl-substituted biphenyl compound isomer with an acid catalyst under isomerization conditions.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 23, 2016
    Inventors: Michael Salciccioli, Jihad M. Dakka, Emiel de Smit, Neeraj Sangar, Scott J. Weigel, Sumathy Raman, Terry E. Helton, Lorenzo C. DeCaul, Christine N. Ella, Chuansheng Bai, Ranjita Ghose
  • Publication number: 20140080699
    Abstract: A method for making a metal oxide material and catalyzing the oxidative coupling of methane, including mixing a metal cation-containing oxidizer portion and a reducing fuel portion with water to define an aqueous solution, evaporatively removing water from the aqueous solution to yield a concentrated liquid, burning the concentrated liquid yield an homogeneous metal oxide powder, flowing methane from a first source and oxygen from a second source over the homogeneous metal oxide powder, and catalyzing an oxidative coupling of methane reaction with the homogeneous metal oxide powder. The homogeneous metal oxide powder contains metal oxides selected from the group including LaSrAlO4, LaAlO3, Sr3Al2O6, Na2WO4—Mn/SiO2, and combinations thereof.
    Type: Application
    Filed: August 20, 2013
    Publication date: March 20, 2014
    Inventors: Ranjita Ghose, Hyun Tae Hwang, Arvind Varma