Patents by Inventor Timi Pravin Singa

Timi Pravin Singa 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).

  • Functionalized ionic liquid for solvating heavy aromatic compounds
    Patent number: 11807610
    Abstract: A process for removing heavy polycyclic aromatic contaminants from a hydrocarbon stream using a quinolinium ionic liquid is described. The process includes contacting the hydrocarbon stream comprising the contaminant with a hydrocarbon-immiscible quinolinium ionic liquid to produce a mixture comprising the hydrocarbon and a hydrocarbon-immiscible quinolinium ionic liquid comprising at least a portion of the removed contaminant; and separating the mixture to produce a hydrocarbon effluent having a reduced level of the contaminant and a hydrocarbon-immiscible quinolinium ionic liquid effluent comprising the hydrocarbon-immiscible quinolinium ionic liquid comprising at least the portion of the removed contaminant.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: November 7, 2023
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Saleh Ali Elomari, Huping Luo, Timi Pravin Singa
  • FUNCTIONALIZED IONIC LIQUID FOR SOLVATING HEAVY AROMATIC COMPOUNDS
    Publication number: 20230250061
    Abstract: A process for removing heavy polycyclic aromatic contaminants from a hydrocarbon stream using a quinolinium ionic liquid is described. The process includes contacting the hydrocarbon stream comprising the contaminant with a hydrocarbon-immiscible quinolinium ionic liquid to produce a mixture comprising the hydrocarbon and a hydrocarbon-immiscible quinolinium ionic liquid comprising at least a portion of the removed contaminant; and separating the mixture to produce a hydrocarbon effluent having a reduced level of the contaminant and a hydrocarbon-immiscible quinolinium ionic liquid effluent comprising the hydrocarbon-immiscible quinolinium ionic liquid comprising at least the portion of the removed contaminant.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 10, 2023
    Inventors: Saleh Ali ELOMARI, Huping LUO, Timi Pravin SINGA
  • Synthesis of aluminosilicate molecular sieves having the IFR structure type
    Patent number: 9452937
    Abstract: This disclosure is directed to a method for directly preparing pure phase aluminosilicate molecular sieves having the IFR framework type using a colloidal aluminosilicate composition in the presence of N-benzyl-4-aza-1-azoniabicyclo[2.2.2]octane cations as a structure directing agent.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: September 27, 2016
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Ali Elomari, Timi Pravin Singa
  • SYNTHESIS OF ALUMINOSILICATE MOLECULAR SIEVES HAVING THE IFR STRUCTURE TYPE
    Publication number: 20160185610
    Abstract: This disclosure is directed to a method for directly preparing pure phase aluminosilicate molecular sieves having the IFR framework type using a colloidal aluminosilicate composition in the presence of N-benzyl-4-aza-1-azoniabicyclo[2.2.2]octane cations as a structure directing agent.
    Type: Application
    Filed: December 30, 2014
    Publication date: June 30, 2016
    Applicant: CHEVRON U.S.A. INC
    Inventors: Saleh Ali ELOMARI, Timi Pravin SINGA
  • Method for preparing MWW-type molecular sieves
    Patent number: 9056779
    Abstract: The present invention is directed to a process for preparing MWW-type molecular sieves using 1,3-diisobutylimidazolium as a structure directing agent.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: June 16, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Ali Elomari, Timi Pravin Singa
  • METHOD FOR PREPARING MWW-TYPE MOLECULAR SIEVES
    Publication number: 20150078993
    Abstract: The present invention is directed to a process for preparing MWW-type molecular sieves using 1,3-diisobutylimidazolium as a structure directing agent.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 19, 2015
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Saleh Ali Elomari, Timi Pravin Singa
  • Method for making aluminosilicate zeolite SSZ-33
    Patent number: 8647601
    Abstract: Aluminosilicate zeolite SSZ-33 is directly prepared using a 1,1?-(pentane-1,5-diyl)bis(3-methylcyclohexyl)piperidinium dication as a structure directing agent.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: February 11, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Ali Elomari, Timi Pravin Singa
  • Method for making aluminosilicate zeolite SSZ-56
    Patent number: 8647602
    Abstract: Aluminosilicate zeolite SSZ-56 is directly prepared using a 1-butyl-1-(3,3,5-trimethylcyclohexyl)piperidinium cation as a structure directing agent.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: February 11, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Ali Elomari, Timi Pravin Singa
  • METHOD FOR MAKING ALUMINOSILICATE ZEOLITE SSZ-56
    Publication number: 20130330272
    Abstract: Aluminosilicate zeolite SSZ-56 is directly prepared using a 1-butyl-1-(3,3,5-trimethylcyclohexyl)piperidinium cation as a structure directing agent.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 12, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Saleh Ali Elomari, Timi Pravin Singa
  • METHOD FOR MAKING ALUMINOSILICATE ZEOLITE SSZ-33
    Publication number: 20130330271
    Abstract: Aluminosilicate zeolite SSZ-33 is directly prepared using a 1,1?-(pentane-1,5-diyl)bis(3-methylcyclohexyl)piperidinium dication as a structure directing agent.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 12, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Saleh Ali Elomari, Timi Pravin Singa