Patents by Inventor Ian A. Robson

Ian A. Robson 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 using mobility control fluid comprising alkylated diphenyloxide sulfonates and foam forming amphoteric surfactants
    Patent number: 5203411
    Abstract: The recovery of hydrocarbons from subterranean formations is improved by the use of a mobility control fluid comprising a mixture of at least one alkylated diphenyl oxide and at least one amphoteric surfactant. A preferred mobility control fluid comprises the disodium salt of hexyldiphenyloxide disulfonate and cocamido-2-hydroxypropyl sultaine.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: April 20, 1993
    Assignee: The Dow Chemical Company
    Inventors: Robert D. Dawe, Thomas Oswald, Ian A. Robson
  • Gas flooding processing for the recovery of oil from subterranean formations
    Patent number: 4860828
    Abstract: In a gas flooding or miscible gas flooding operation, the sweep efficiency of the gas is improved using a mixture of an alkylated diphenyl sulfonate and an alpha-olefin sulfonate as the surfactants in a mobility control fluid or diverter.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: August 29, 1989
    Assignee: The Dow Chemical Company
    Inventors: Thomas Oswald, Ian A. Robson