Patents by Inventor Sandeep Singh Dhingra

Sandeep Singh Dhingra 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).

  • Catalytic cracking processing using an MCM-68 catalyst
    Patent number: 7198711
    Abstract: A process for catalytic cracking of a hydrocarbon feedstock feeds to produce an enhanced yield butylenes and isobutane comprises contacting the feedstock with a catalyst composition comprising MCM-68. The MCM-68 may be used as the primary cracking catalyst or may be used as an additive component in conjunction with a conventional cracking catalyst, such as a large pore molecular sieve having a pore size greater than 7 Angstrom.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: April 3, 2007
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Arthur Chester, Larry Arthur Green, Sandeep Singh Dhingra, Timothy Mason, Hye Kyung Cho Timken
  • Crystalline molecular sieve composition MCM-65, its synthesis and use
    Patent number: 6869587
    Abstract: This invention relates to a novel synthetic porous crystalline molecular sieve material, MCM-65, to a reaction mixture and method for its preparation, and to use of the MCM-65 in catalytic conversion of organic compounds. The crystalline material exhibits a distinctive X-ray diffraction pattern as shown in Table 1.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: March 22, 2005
    Assignee: ExxonMobil Chemical Patents Inc
    Inventors: Sandeep Singh Dhingra, Charles T. Kresge, Stephen G. Casmer
  • Crystalline molecular sieve composition mcm-65, its synthesis and use
    Publication number: 20040047802
    Abstract: This invention relates to a novel synthetic porous crystalline molecular sieve material, MCM-65, to a reaction mixture and method for its preparation, and to use of the MCM-65 in catalytic conversion of organic compounds.
    Type: Application
    Filed: June 27, 2003
    Publication date: March 11, 2004
    Inventors: Sandeep Singh Dhingra, Charles T. Kresge, Stephen G. Casmer
  • Synthetic porous crystalline MCM-71, its synthesis and use
    Patent number: 6645462
    Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-71, a method for its preparation and its use in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern and has a unique 3-dimensional channel system comprising generally straight, highly elliptical channels, each of which is defined by 10-membered rings of tetrahedrally coordinated atoms, intersecting with sinusoidal channels, each of which is defined by 8-membered rings of tetrahedrally coordinated atoms.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: November 11, 2003
    Assignee: Exxon Mobil Oil Corporation
    Inventor: Sandeep Singh Dhingra
  • Synthetic porous crystalline MCM-67, its synthesis and use
    Patent number: 6419819
    Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-67, a method for its preparation and use thereof in catalytic conversion of organic compounds. MCM-67 appears to be closely related in structure to VPI-8 and SSZ-41 but is synthesized without zinc and in the presence of manganese and/or cobalt ions.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: July 16, 2002
    Assignee: ExxonMobil Oil Corporation
    Inventors: Sandeep Singh Dhingra, Charles T. Kresge, Robin P. Ziebarth