Patents by Inventor by Janice M. Gillespie, executrix

by Janice M. Gillespie, executrix 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).

  • Adsorptive separation of aromatic isomers
    Patent number: 4283587
    Abstract: An adsorptive separation process is disclosed for separating para-aromatic isomers from a hydrocarbon feed containing a mixture of aromatic isomers, using a crystalline aluminosilicate adsorbent which has been treated with an alkyl amine preferably an alkyl amine hydrochloride. The alkyl amine treatment substantially increases the selectivity of the adsorbent for the para-xylene isomer, relative to the heavy desorbent p-DEB, thereby improving the efficiency of the separation process.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: August 11, 1981
    Assignee: UOP Inc.
    Inventors: Donald H. Rosback, deceased, by Janice M. Gillespie, executrix