Patents by Inventor Wha Y. Lee

Wha Y. Lee 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).

  • Membrane catalytic reactor comprising heteropolyacid catalyst and polysulfone membrane
    Patent number: 5227141
    Abstract: A membrane catalytic reactor which comprises a heteropolyacid selected from the group consisting of 12-tungstophosphoric acid, 12-molybdophosphoric acid, 12-molybdotungstophosphoric acid, and 12-tungstosilicic acid, and polysulfone membrane is provided. This membrane catalytic reactor is applicable to vapor-phase dehydration, dehydrogenation, oxidation, and simultaneous separation of organic or inorganic materials, particularly vapor-phase dehydration of ethanol.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: July 13, 1993
    Assignee: Korea Institute of Science and Technology
    Inventors: Jae J. Kim, Wha Y. Lee, In K. Song