Patents by Inventor Margo W. Steward

Margo W. Steward 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 for producing cumene
    Patent number: 8350111
    Abstract: One exemplary embodiment can be a method for processing polyisopropylbenzene for producing cumene. The method can include passing a transalkylation feed stream to a transalkylation zone, and passing a reaction product to a separation zone. Typically, the separation zone produces a stream including di-isopropylbenzene, tri-isopropylbenzene, and one or more heavy compounds. Moreover, the stream may include at least about 0.7%, by weight, of the one or more heavy compounds based on the weight of the di-isopropylbenzene, tri-isopropylbenzene, and the one or more heavy compounds in the stream, and at least a portion of the stream is recycled to the transalkylation zone.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: January 8, 2013
    Assignee: UOP LLC
    Inventors: Deng-Yang Jan, Christopher Lepine Standing, James Albert Johnson, Margo W. Steward, Mathias P. Koljack
  • METHOD FOR PRODUCING CUMENE
    Publication number: 20120088937
    Abstract: One exemplary embodiment can be a method for processing polyisopropylbenzene for producing cumene. The method can include passing a transalkylation feed stream to a transalkylation zone, and passing a reaction product to a separation zone. Typically, the separation zone produces a stream including di-isopropylbenzene, tri-isopropylbenzene, and one or more heavy compounds. Moreover, the stream may include at least about 0.7%, by weight, of the one or more heavy compounds based on the weight of the di-isopropylbenzene, tri-isopropylbenzene, and the one or more heavy compounds in the stream, and at least a portion of the stream is recycled to the transalkylation zone.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 12, 2012
    Applicant: UOP, LLC
    Inventors: Deng-Yang Jan, Christopher Lepine Standing, James Albert Johnson, Margo W. Steward, Mathias P. Koljack