Patents by Inventor Charles Robert Bettler

Charles Robert Bettler 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).

  • Easy to disperse, high durability TiOpigment and method of making same
    Patent number: 8105432
    Abstract: The present invention relates to a TiO2 pigment coated sequentially in a wet treatment process with hydrous silica and hydrous alumina both in the presence of citric acid wherein the resulting pigment is coated with from 1 to 4% amorphous alumina based on the weight of the untreated TiO2; from 3 to 6% silica glass based on the weight of the untreated TiO2.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: January 31, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Charles Robert Bettler, Michael Patrick Diebold
  • Easy to disperse, high durability TiO2 pigment and method of making same
    Patent number: 6783586
    Abstract: The present invention relates to a TiO2 pigment coated sequentially in a wet treatment process with hydrous silica and hydrous alumina both in the presence of citric acid wherein the resulting pigment is coated with from 1 to 4% amorphous alumina based on the weight of the untreated TiO2; from 3 to 6% silica glass based on the weight of the untreated TiO2.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: August 31, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles Robert Bettler, Michael Patrick Deibold
  • EASY TO DISPERSE, HIGH DURABILITY TIO2 PIGMENT AND METHOD OF MAKING SAME
    Publication number: 20030089278
    Abstract: The present invention relates to a TiO2 pigment coated sequentially in a wet treatment process with hydrous silica and hydrous alumina both in the presence of citric acid wherein the resulting pigment is coated with from 1 to 4% amorphous alumina based on the weight of the untreated TiO2; from 3 to 6% silica glass based on the weight of the untreated TiO2.
    Type: Application
    Filed: October 29, 2002
    Publication date: May 15, 2003
    Inventors: Charles Robert Bettler, Michael Patrick Deibold
  • Continuous wet treatment process to prepare durable, high gloss titanium dioxide pigment
    Patent number: 5993533
    Abstract: A process is provided to prepare durable, high gloss titanium dioxide pigments by a continuous wet treatment process which involves curing of a silica coating at pH of between 7.0 and 8.5. Pigment prepared in this fashion is substantially free from Al(OH).sub.3 impurities and has excellent performance properties in high quality latex paint formulations.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: November 30, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Michael P Diebold, Charles Robert Bettler, Phillip Martin Niedenzu, Anhtony John Coombe, John Phillip Lanci, Sr.
  • Titanium dioxide pigment coated with boria-modified silica and alumina
    Patent number: 5753025
    Abstract: A base TiO.sub.2 pigment particles bearing coatings of a boria-modified silica and alumina is disclosed.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: May 19, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles Robert Bettler, Howard Wayne Jacobson, Michael R. Baloga, Max H. Lewis