Patents by Inventor Anne Campeotto

Anne Campeotto 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 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
  • 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