Patents by Inventor Hsiao-Jun Li

Hsiao-Jun Li 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).

  • Emulsion process for sulfolene and sulfolane products
    Patent number: 3998845
    Abstract: Sulfolene, a typical conjugated diene cyclic sulfone, is prepared by emulsifying butadiene in water in the presence of an antioxidant, and thereafter reacting the emulsion with sulfur dioxide under high pressure, for a period sufficient to complete reaction with the butadiene, whereby yields approaching quantitative are obtained.
    Type: Grant
    Filed: June 14, 1974
    Date of Patent: December 21, 1976
    Assignee: Texas-U.S. Chemical Company
    Inventors: Herbert J. Goldstein, Hsiao-Jun Li