Patents by Inventor Herbert Hi-Hwa Yuan

Herbert Hi-Hwa Yuan 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).

  • Determining saturation and permeability using mercury capillary pressure curves
    Patent number: 4625544
    Abstract: A method using mercury capillary pressure curves for determining various characteristics of formations. The mercury capillary pressure curve is amplified and small changes are used to compute residual saturation, permeability, Archie's exponent m and the resistivity factor F of the formation.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: December 2, 1986
    Assignee: Shell Oil Company
    Inventors: Herbert Hi-Hwa Yuan, Benjamin F. Swanson, Robert G. Stapleton