Patents by Inventor Michel Guirguis

Michel Guirguis 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).

  • Method of treating sour liquefied petroleum gas
    Patent number: 5326385
    Abstract: A method of treating sour liquefied petroleum gas comprising removing hydrogen sulfide from the sour liquefied petroleum gas by:(a) contacting the liquefied petroleum gas in an extraction column with a liquid and regenerable absorbent to obtain purified liquefied petroleum gas;(b) supplying the purified liquefied petroleum gas to a membrane unit comprising a membrane selected from a permselective membrane and a porous hydrophobic membrane, a permeate outlet and a retentate outlet; and(c) removing from the permeate outlet of the membrane unit treated liquefied petroleum gas and from the retentate outlet of the membrane unit contaminated liquefied petroleum gas.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: July 5, 1994
    Assignee: Shell Oil Company
    Inventors: Jayantilal B. Rajani, Thijme Last, Michel Guirguis, Johannes L. W. C. Den Boestert, Hendrik C. Rijkens