Patents by Inventor Andrew M. Hiester

Andrew M. Hiester 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: 7439204
    Abstract: A process for controlling the hydrogenation activity of a catalyst comprised of a crystalline molecular sieve and at least one hydrogenation metal selected from the group consisting of a Group VIIB metal, a Group VIII metal, and mixtures thereof. The process is carried out by contacting the catalyst with hydrogen under sufficient conditions of temperature and pressure and for sufficient time to reduce the hydrogenolysis activity of the catalyst. The catalyst prepared by the process finds application in the catalytic conversion of organic compounds, such as ethylbenzene dealkylation, xylenes isomerization, and the transalkylation of polyalkylaromatic hydrocarbons.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: October 21, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Timothy E. McMinn, Ronald J. Cimini, Robert A. Crane, Andrew M. Hiester, Teresa A. Jurgens-Kowal, Gary D. Mohr