Patents by Inventor Jong I. Lee

Jong I. 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).

  • Oil recovery process
    Patent number: 4217955
    Abstract: The recovery of oil from a subterranean hydrocarbon-bearing reservoir by the injection thereinto of a mixture of carbon dioxide and sulfur dioxide which is miscible with the reservoir oil at pressure and temperature prevailing in the reservoir. For production a driving fluid is then injected to displace the zone and reservoir oil and fluids for recovery.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: August 19, 1980
    Assignee: Petroleum Recovery Institute
    Inventors: Phillip M. Sigmund, Jong I. Lee, James E. Fosti