Patents by Inventor Jack J. C. Hsu

Jack J. C. Hsu 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).

  • Recovering hydrocarbons with a mixture of carbon dioxide and trichloroethane
    Patent number: 5117907
    Abstract: The invention is a method of recovering petroleum hydrocarbons from an underground formation penetrated by at least one injection well and at least one production well, which comprises injecting through an injection well a mixture of carbon dioxide and about 0.1% to about 20% by weight trichloroethane at a temperature and pressure above the bubble point of the mixture, and recovering hydrocarbons and other fluids at a production well.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: June 2, 1992
    Inventor: Jack J. C. Hsu