Patents by Inventor C.P. Kelkar

C.P. Kelkar 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).

  • NOx reduction composition for use in FCC processes
    Publication number: 20050163691
    Abstract: A composition for controlling NOx emissions during FCC processes comprises a mixed oxide of ceria and zirconia, (ii) optionally, at least one oxide from the lanthanide series other than ceria and (iii) optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
    Type: Application
    Filed: January 23, 2004
    Publication date: July 28, 2005
    Inventors: C.P. Kelkar, David Stockwell, Samuel Tauster
  • NOx reduction composition for use in FCC processes
    Publication number: 20040141897
    Abstract: A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 22, 2004
    Applicant: Engelhard
    Inventors: C.P. Kelkar, David Stockwell, Samuel Tauster
  • NOx reduction composition for use in FCC processes
    Publication number: 20040141898
    Abstract: A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 22, 2004
    Inventors: C. P. Kelkar, David Stockwell, Samuel Tauster
  • CO oxidation promoters for use in FCC processes
    Publication number: 20040072675
    Abstract: A composition for controlling CO and NOx emissions during FCC processes comprises (i) acidic oxide support, (ii) cerium oxide, (iii) lanthanide oxide other than ceria such as praseodymium oxide (iv), optionally, oxide of a metal from Groups Ib and IIb such as copper, silver and zinc and (v) precious metal such as Pt and Pd.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 15, 2004
    Inventors: C. P. Kelkar, Yuejin Li, Rostam J. Madon, Marius Vaarkamp
  • NOx reduction composition for use in FCC processes
    Publication number: 20030098259
    Abstract: A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
    Type: Application
    Filed: November 23, 2001
    Publication date: May 29, 2003
    Applicant: ENGELHARD CORPORATION
    Inventors: C.P. Kelkar, David Stockwell, Samuel Tauster