Patents by Inventor Ruma Ghosh

Ruma Ghosh 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).

  • Process for making catalysts useful for the conversion of paraffins to olefins
    Patent number: 8105971
    Abstract: A process for forming a catalyst useful for the production of an olefin from a hydrocarbon is disclosed. The process may include: admixing at least one of elemental metals and compounds to form a multi-metal composition comprising Mo, V, Nb, Te and at least one of Ni and Sb; adjusting the pH of the multi-metal composition by adding nitric acid; drying the acidified multi-metal composition; calcining the dried multi-metal composition; and grinding the calcined multi-metal composition. The ground multi-metal composition may then be sized or shaped to form a mixed metal oxide catalyst. Alternatively, the ground multi-metal composition may be treated with an acid, optionally annealed, and sized or shaped to form a mixed metal oxide catalyst.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: January 31, 2012
    Assignee: Lummus Technology Inc.
    Inventors: Anne Mae Gaffney, Ruma Ghosh, Ruozhi Song, Chuen Yuan Yeh, Tadeusz Langner
  • Catalysts for the conversion of paraffins to olefins and use thereof
    Patent number: 8105972
    Abstract: A catalyst for the oxidative dehydrogenation of a paraffin to form an olefin, the catalyst having a general formula MoaVbXcYdOn wherein: X=at least one of Nb and Ta; Y=at least one of Te, Sb, Ga, Pd, W, Bi and Al; a=1.0; b=0.05 to 1.0; c=0.001 to 1.0; d=0.001 to 1.0; and n is determined by the oxidation states of the other elements. The catalyst may have a selectivity to the olefin of at least 90 mole % at a paraffin conversion of at least 65%.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: January 31, 2012
    Assignee: Lummus Technology Inc.
    Inventors: Anne Mae Gaffney, Ruma Ghosh, Ruozhi Song, Chuen Yuan Yeh, Tadeusz Langner
  • CATALYSTS FOR THE CONVERSION OF PARAFFINS TO OLEFINS AND USE THEREOF
    Publication number: 20100255986
    Abstract: A catalyst for the oxidative dehydrogenation of a paraffin to form an olefin, the catalyst having a general formula MoaVbXcYdOn wherein: X=at least one of Nb and Ta; Y=at least one of Te, Sb, Ga, Pd, W, Bi and Al; a=1.0; b=0.05 to 1.0; c=0.001 to 1.0; d=0.001 to 1.0; and n is determined by the oxidation states of the other elements. The catalyst may have a selectivity to the olefin of at least 90 mole % at a paraffin conversion of at least 65%.
    Type: Application
    Filed: April 2, 2009
    Publication date: October 7, 2010
    Applicant: Lummus Technology Inc.
    Inventors: Anne Mae Gaffney, Ruma Ghosh, Ruozhi Song, Chuen Yuan Yeh, Tadeusz Langner
  • PROCESS FOR MAKING CATALYSTS USEFUL FOR THE CONVERSION OF PARAFFINS TO OLEFINS
    Publication number: 20100255985
    Abstract: A process for forming a catalyst useful for the production of an olefin from a hydrocarbon is disclosed. The process may include: admixing at least one of elemental metals and compounds to form a multi-metal composition comprising Mo, V, Nb, Te and at least one of Ni and Sb; adjusting the pH of the multi-metal composition by adding nitric acid; drying the acidified multi-metal composition; calcining the dried multi-metal composition; and grinding the calcined multi-metal composition. The ground multi-metal composition may then be sized or shaped to form a mixed metal oxide catalyst. Alternatively, the ground multi-metal composition may be treated with an acid, optionally annealed, and sized or shaped to form a mixed metal oxide catalyst.
    Type: Application
    Filed: April 2, 2009
    Publication date: October 7, 2010
    Applicant: Lummus Technology Inc.
    Inventors: Anne Mae Gaffney, Ruma Ghosh, Ruozhi Song, Chuen Yuan Yeh, Tadeusz Langner