Patents by Inventor William L. Lawrence

William L. Lawrence 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).

  • Vessel for treating liquids
    Patent number: 5628901
    Abstract: A single vessel with no moving parts is constructed to perform the functions of coalescing, vacuum dehydration, and thin film evaporation.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 13, 1997
    Assignee: Castrol Industrial North America Inc.
    Inventors: William L. Lawrence, Robert D. Coyle
  • Oil reclamation apparatus
    Patent number: 4769147
    Abstract: Method and apparatus for purification of liquids, particularly hydrophobic oil-water emulsions which includes heating the emulsified liquid to a process temperature where accelerated stratification occurs and passing the fluid through a fiberous media which is maintained at a selected compressed condition which allows flow through the media to separate the oil and water phases. Additionally, within the scope of the present invention organic fluids containing significant amounts of water can be heated utilizing a vacuum in order to reduce the water content to the range of 0 to as much as 8% prior to passage through the media at the process temperature.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: September 6, 1988
    Assignee: Opcon Inc.
    Inventors: William L. Lawrence, Robert D. Coyle, Ronald G. Rose