Patents by Inventor Keith Sellars

Keith Sellars 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).

  • Paints from two or more differently coloured aqueous film-forming polymer emulsions
    Patent number: 3956206
    Abstract: A process for the production of a multicoloured paint which comprises admixing two or more differently coloured aqueous polymer emulsions, each containing polyvinyl alcohol as a protective colloid, with an aqueous solution of borax to form a multicoloured paint dispersion consisting of discrete coloured aqueous polymer emulsion particles as the disperse phases in an aqueous continuous phase of the borax solution, a clay of the formula ##EQU1## WHEREIN M is a cation, x is a value greater than zero and less than 6, y is from 1.00 up to but less than 4 and n is an integer from 1 to 3, being incorporated into the continuous phase to stabilize the paint produced.
    Type: Grant
    Filed: July 14, 1971
    Date of Patent: May 11, 1976
    Inventors: Keith Sellars, Peter Laybourn, Leslie Chandler
  • Multicoloured paints from two or more pigmented aqueous polymer emulsions
    Patent number: 3950283
    Abstract: A process for the production of a multicoloured paint which comprises admixing two or more differently coloured hydroxyethyl cellulose-containing aqueous polymer emulsions with a dispersion of a clay of the formula ##EQU1## WHEREIN M is a cation, x is a value greater than zero and less than 6, y is from 1.00 up to but less than 4 and n is an integer from 1 to 3, to form a multicoloured paint dispersion consisting of discrete coloured aqueous polymer emulsion particles as the disperse phases in an aqueous continuous phase of the clay dispersion.
    Type: Grant
    Filed: July 9, 1971
    Date of Patent: April 13, 1976
    Assignee: Harlow Chemical Company Limited
    Inventors: Keith Sellars, Peter Laybourn