Patents by Inventor David B. Chambers

David B. Chambers 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).

  • Coalescence of oil in oil/water emulsions
    Patent number: 4199447
    Abstract: This invention relates to a method for the removal of oil from an oil in water emulsion by passing the emulsion through a fibrous structure comprising fibres having finely divided particles having an average size of one micron or less and which exhibit oleophilic and hydrophobic properties adhered to and penetrating their outer surfaces, and removing the coalesced oil droplets so formed.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: April 22, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: David B. Chambers, Barry Walker
  • Removal of oil from an oil in water emulsion
    Patent number: 4168229
    Abstract: A method for the removal of oil from an oil in water emulsion by contacting the emulsion with a fibrous structure and removing the coalesced oil droplets so formed the improvement being that the fibrous structure comprises inorganic fibers which, in the emulsion, have a positive zeta potential.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: September 18, 1979
    Assignee: Imperial Chemical Industries Limited
    Inventor: David B. Chambers