Patents by Inventor Robert Burniston

Robert Burniston 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).

  • Pigment for paper and paper laminate
    Patent number: 9481797
    Abstract: A pigment mixture comprising (a) pigment particles, (b) colloidal spacer particles dispersed on surfaces of the pigment particles, and (c) carrier particles, wherein the pigment particles with colloidal spacer particles are dispersed on surfaces of the carrier particles. A pigment mixture of titanium dioxide pigment particles having colloidal silica spacer particles on surfaces of the titanium dioxide, the titanium dioxide and colloidal silica attached to surfaces of diatomaceous earth carrier particles, provides improved optical efficiency of the pigment and improved retention in a paper fiber matrix.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: November 1, 2016
    Assignee: Cristal USA Inc.
    Inventors: Neil Burniston, Robert Burniston
  • Pigment For Paper And Paper Laminate
    Publication number: 20130040130
    Abstract: A pigment mixture comprising (a) pigment particles, (b) colloidal spacer particles dispersed on surfaces of the pigment particles, and (c) carrier particles, wherein the pigment particles with colloidal spacer particles are dispersed on surfaces of the carrier particles. A pigment mixture of titanium dioxide pigment particles having colloidal silica spacer particles on surfaces of the titanium dioxide, the titanium dioxide and colloidal silica attached to surfaces of diatomaceous earth carrier particles, provides improved optical efficiency of the pigment and improved retention in a paper fiber matrix.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 14, 2013
    Inventors: Neil Burniston, Robert Burniston
  • Titanium dioxide pigments with improved gloss and/or durability
    Patent number: 6656261
    Abstract: The present invention provides titanium dioxide pigments with improved gloss and/or durability. The titanium dioxide pigments are made by treating titanium dioxide with a plurality of metal salts under conditions suitable to form the titanium dioxide pigment having improved gloss and/or durability, wherein at least one metal salt is capable of providing a monovalent anion. Preferred pigments of the present invention are substantially-sulfate free.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: December 2, 2003
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Brian Tear, John Stratton, Robert Burniston
  • Titanium dioxide pigments with improved gloss and/or durability
    Publication number: 20020166478
    Abstract: The present invention provides titanium dioxide pigments with improved gloss and/or durability. The titanium dioxide pigments are made by treating titanium dioxide with a plurality of metal salts under conditions suitable to form the titanium dioxide pigment having improved gloss and/or durability, wherein at least one metal salt is capable of providing a monovalent anion. Preferred pigments of the present invention are substantially-sulfate free.
    Type: Application
    Filed: March 9, 2001
    Publication date: November 14, 2002
    Inventors: Brian Tear, John Stratton, Robert Burniston