Patents by Inventor James C. Spry, Jr.

James C. Spry, Jr. 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).

  • Process for the hydrogenation of aromatic hydrocarbons
    Patent number: 4610779
    Abstract: A process for the hydrogenation of aromatic hydrocarbons contained in hydrocarbonaceous oil feed comprising at least about 15 wppm organic nitrogen compounds is provided in which the feed is contacted with hydrogen in a substantially sulfur-free environment in the presence of a catalyst comprising a Group VIII noble metal component, such as palladium, a Y-type crystalline aluminosilicate zeolite and a support such as alumina. When the hydrogenation activity of the catalyst decreases, the partially deactivated catalyst is stripped with hydrogen periodically to increase the hydrogenation activity of the catalyst.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: September 9, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Gerald E. Markley, James C. Spry, Jr.