Patents by Inventor Nancy J. Flint

Nancy J. Flint 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).

  • Phosphorus containing alumina catalyst for the production of aromatics
    Patent number: 4636483
    Abstract: Superior tolerance to catalyst coking is obtained with a catalytic composite comprising a gallium component and a crystalline aluminosilicate incorporated with a phorphorus containing alumina. A five-fold reduction in the coke content of the spent catalyst of the instant invention is observed which is directly attributable to the phosphorus containing alumina. A novel method of preparing this catalyst is presented, along with a novel process for the dehydrocyclodimerization of C.sub.2 -C.sub.5 aliphatic hydrocarbons.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: January 13, 1987
    Assignee: UOP Inc.
    Inventors: Solveg S. Kjell, Tai-Hsiang Chao, Nancy J. Flint, Arthur A. Foutsitzis
  • Separation of ortho-xylene
    Patent number: 4529828
    Abstract: A process able to separate ortho-xylene from the other C.sub.8 aromatics. In the process the ortho-xylene-containing feed mixture is contacted with an X-type zeolite having silver cations at exchangeable cationic sites which has been subjected to a reduction step. The ortho-xylene is selectively adsorbed onto the adsorbent. The feed is then removed from the absorbent and the ortho-xylene recovered by desorption with para-diethylbenzene. The process is particularly amenable to the simulated moving bed flow scheme.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: July 16, 1985
    Assignee: UOP Inc.
    Inventors: George J. Antos, Nancy J. Flint