Patents by Inventor Stephen P. Kinniard

Stephen P. Kinniard 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).

  • Method for Preparing Agglomerated Metal Oxides
    Publication number: 20100172824
    Abstract: A method for preparing agglomerates of a metal oxide by mixing metal oxide particles with a non-aqueous liquid to form a slurry, and then drying the slurry.
    Type: Application
    Filed: March 17, 2010
    Publication date: July 8, 2010
    Inventor: Stephen P. Kinniard
  • Photocatalytic rutile titanium dioxide
    Patent number: 7521039
    Abstract: The present invention is directed to photocatalytically active rutile titanium dioxide. The photocatalytically active rutile titanium dioxide of the present invention demonstrates enhanced activity in the visible light spectrum. It may be produced by neutralizing rutile seed to a higher pH than that at which it has traditionally been neutralized prior to washing and thermally treating the seed.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 21, 2009
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Claire Bygott, Michel Ries, Stephen P. Kinniard
  • Photocatalytic rutile titanium dioxide
    Publication number: 20040092393
    Abstract: The present invention is directed to photocatalytically active rutile titanium dioxide. The photocatalytically active rutile titanium dioxide of the present invention demonstrates enhanced activity in the visible light spectrum. It may be produced by neutralizing rutile seed to a higher pH than that at which it has traditionally been neutralized prior to washing and thermally treating the seed.
    Type: Application
    Filed: November 8, 2002
    Publication date: May 13, 2004
    Inventors: Claire Bygott, Michel Ries, Stephen P. Kinniard
  • Method for manufacturing high opacity, durable pigment
    Patent number: 6528568
    Abstract: The present invention relates to an improved titanium dioxide pigment that incorporate a dense silica coating and its process for manufacture. The pigment is preferably produced from a titania base from the chloride process in which the manufacturing process comprises the following steps in the order stated: (a) partial or substantial removal of salt from the oxidizer discharge; (b) addition of a dispersant; (c) milling to produce a highly dispersed, highly deagglomerated slurry, followed by dense silica surface treatment. Pigments prepared using the inventive process exhibit optics equivalent to high gloss, high opacity pigments and maintain the durability of the more conventional dense silica treated pigments.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: March 4, 2003
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Stephen P. Kinniard, Anne Campeotto
  • Methods for making low volatile titanium dioxide pigments
    Patent number: 6517629
    Abstract: The present invention provides a process for generating titanium dioxide pigments that have reduced moisture retention. By leaching oxidizer discharge and removing alumina containing compounds, one is able to generate a low volatile pigmentary bases. These low volatile pigmentary bases may be processed into finished low volatile pigments that may be combined with polymers to form polymer matrices. These pigments may be incorporated into polymer matrices at high temperatures without significant lacing.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: February 11, 2003
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventor: Stephen P. Kinniard
  • Method for manufacturing high opacity, durable pigment
    Publication number: 20020165308
    Abstract: The present invention relates to an improved titanium dioxide pigment that incorporate a dense silica coating and its process for manufacture. The pigment is preferably produced from a titania base from the chloride process in which the manufacturing process comprises the following steps in the order stated: (a) partial or substantial removal of salt from the oxidizer discharge; (b) addition of a dispersant; (c) milling to produce a highly dispersed, highly deagglomerated slurry, followed by dense silica surface treatment. Pigments prepared using the inventive process exhibit optics equivalent to high gloss, high opacity pigments and maintain the durability of the more conventional dense silica treated pigments.
    Type: Application
    Filed: February 23, 2001
    Publication date: November 7, 2002
    Inventors: Stephen P. Kinniard, Anne Campeotto
  • Methods for making low volatile titanium dioxide pigments
    Publication number: 20020148389
    Abstract: The present invention provides a process for generating titanium dioxide pigments that have reduced moisture retention. By leaching oxidizer discharge and removing alumina containing compounds, one is able to generate a low volatile pigmentary bases. These low volatile pigmentary bases may be processed into finished low volatile pigments that may be combined with polymers to form polymer matrices. These pigments may be incorporated into polymer matrices at high temperatures without significant lacing.
    Type: Application
    Filed: February 5, 2001
    Publication date: October 17, 2002
    Inventor: Stephen P. Kinniard