Patents by Inventor Sue D. Pandey

Sue D. Pandey 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).

  • Patent number: 4680280
    Abstract: A reforming catalyst comprising a large-pore zeolite and at least one reforming catalytic metal selected from the group consisting of the Group VIII noble metals, having enhanced sulfur tolerance achieved by adding at least one desulfurization metal to the catalyst; and a reforming process having high selectivity for dehydrocyclization which comprises contacting a naphtha boiling in the gasoline boiling range and containing some acyclic hydrocarbons with the foregoing catalyst.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: July 14, 1987
    Assignee: Chevron Research Company
    Inventors: Sue D. Pandey, Waldeen C. Buss
  • Patent number: 4567312
    Abstract: Paraffins having a carbon number in excess of 10 are converted to aromatics, such as n-alkylbenzenes, over a dehydrocyclization catalyst comprising a large-pore zeolite containing at least one Group VIII metal. This process is carried out at a pressure of less than 100 psig. The dehydrocyclization catalyst can contain an alkaline earth metal selected from the group consisting of barium, strontium, and calcium. Preferably, the dehydrocyclization catalyst has from 8 to 10 percent by weight barium and from 0.2 to 1.0 percent by weight platinum, and the large-pore zeolite is a type L zeolite.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: January 28, 1986
    Assignee: Chevron Research Company
    Inventors: Stephen J. Miller, Sue D. Pandey