Patents by Inventor Guy F. Oldham

Guy F. Oldham 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-containing effluent treatment by gravity separation
    Patent number: 4105553
    Abstract: Oil-containing effluent is treated by passing it through a gravity separator and obtaining (a) a wet oil fraction, (b) an aqueous fraction of reduced oil content and (c) a wet oily sludge. Fractions (a) and (c) are then combined and passed through a pressure filter so that solids are retained and oil and water passed through. The oil and water are then passed to a separator and a reusable oil fraction is recovered and a water fraction which is returned to the gravity separator.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: August 8, 1978
    Assignee: The British Petroleum Company Limited
    Inventor: Guy F. Oldham