Patents by Inventor Hsiang-ning N. Sun

Hsiang-ning N. Sun 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).

  • Use of short contact time in oxygenate conversion
    Patent number: 5952538
    Abstract: The present invention relates to methods for the converting oxygenates to olefins. More particularly, the invention relates to methods for converting oxygenates to olefins with improved olefin yields and decreased yields of undesirable methane and other light saturate byproducts.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: September 14, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Stephen Neil Vaughn, David R. Lumgair, Hsiang-ning N. Sun