Patents by Inventor Marvin A. Stewart

Marvin A. Stewart 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).

  • Slotted baffle for use in separating oil-water mixtures
    Patent number: 4132652
    Abstract: An improved baffle for use in an oil-water separation tank including a perpendicular solid portion and an inclined slotted portion extending downwardly and inwardly in the direction of flow from the lower edge of the perpendicular solid portion, the slotted portion having at least three rows of downwardly spaced apart slots extending laterally across the slotted portion, the uppermost of said rows an averge of from 1/2 to 2 slots per lateral meter and each of the lower rows therefrom having at least 25% more slots than said uppermost row.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: January 2, 1979
    Assignee: Chevron Research Company
    Inventors: David K. Anderson, Marvin A. Stewart
  • Apparatus for separating oil-water mixtures
    Patent number: 4064054
    Abstract: A wash tank is provided for separating an oil-water mixture and utilizes a plurality of baffle sections to assist in separating oil and water. The baffle sections include solid perpendicular portions and sloping perforated portions arranged in a special configuration within the tank.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: December 20, 1977
    Assignee: Chevron Research Company
    Inventors: David K. Anderson, Marvin A. Stewart