Patents by Inventor Gayatri S. Rav

Gayatri S. Rav 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).

  • Supported heteropoly acid catalysts
    Patent number: 5475178
    Abstract: There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is designated as MCM-41. There is also provided a method for preparing this catalyst by impregnating the heteropoly acid on the support. There is also provided a process for using this catalyst to catalyze acid catalyzed reactions, such as the isomerization of paraffins and the alkylation of aromatics.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: December 12, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Kenneth J. Del Rossi, Gregory A. Jablonski, Charles T. Kresge, Guenter H. Kuehl, David O. Marler, Gayatri S. Rav, Brenda H. Rose
  • Supported heteropoly acid catalysts
    Patent number: 5366945
    Abstract: There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is designated as MCM-41. There is also provided a method for preparing this catalyst by impregnating the heteropoly acid on the support. There is also provided a process for using this catalyst to catalyze acid catalyzed reactions, such as the isomerization of paraffins and the alkylation of aromatics.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 22, 1994
    Assignee: Mobil Oil Corp.
    Inventors: Charles T. Kresge, David O. Marler, Gayatri S. Rav, Brenda H. Rose
  • Supported heteropoly acid catalysts for isoparaffin-olefin alkylation reactions
    Patent number: 5324881
    Abstract: The alkylation of isoparaffin with olefin to provide alkylate is carried out in the presence of, as catalyst, a supported heteropoly acid. The support may be MCM-41, and the heteropoly acid may be dodecawolframophosphoric acid (i.e., phosphotungstic acid, i.e., H.sub.3 PW.sub.12 O.sub.40).
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: June 28, 1994
    Assignee: Mobil Oil Corp.
    Inventors: Charles T. Kresge, David O. Marler, Gayatri S. Rav, Brenda H. Rose