Patents by Inventor Michael Andrew Hofmann

Michael Andrew Hofmann 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).

  • REDUCED ABRASION OF TITANIUM DIOXIDE PIGMENTS PRODUCED FROM THE CHLORIDE PROCESS
    Publication number: 20110293508
    Abstract: Disclosed herein are pigments comprising mostly rutile TiO2, wherein the mostly rutile TiO2 consists essentially of low abrasion TiO2 particles produced by introducing a metal halide into the chloride process. Further disclosed are ink, can coatings, fibers, papers, and plastics comprising the pigment. Also disclosed herein are pigments comprising the low abrasion TiO2 pigments comprising TiO2 particles which have been further heat treated at a temperature of at least about 800° C. in an oxidizing atmosphere for a time period of at least about 1 hour.
    Type: Application
    Filed: August 8, 2011
    Publication date: December 1, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: MICHAEL ANDREW HOFMANN, CHARLES DAVID MUSICK, NARAYANAN SANKARA SUBRAMANIAN, KOSTANTINOS KOURTAKIS, AUSTIN HENRY REID, JR.
  • REDUCED ABRASION OF TITANIUM DIOXIDE PIGMENTS PRODUCED FROM THE CHLORIDE PROCESS
    Publication number: 20080305363
    Abstract: Disclosed herein are pigments comprising mostly rutile TiO2, wherein the mostly rutile TiO2 consists essentially of low abrasion TiO2 particles produced by introducing a metal halide into the chloride process. Further disclosed are ink, can coatings, fibers, papers, and plastics comprising the pigment. Also disclosed herein are pigments comprising the low abrasion TiO2 pigments comprising TiO2 particles which have been further heat treated at a temperature of at least about 800° C. in an oxidizing atmosphere for a time period of at least about 1 hour.
    Type: Application
    Filed: August 15, 2008
    Publication date: December 11, 2008
    Inventors: Michael Andrew Hofmann, Charles David Musick, Narayanan Sankara Subramanian, Kostantinos Kourtakis, Austin Henry Reid, JR.
  • Reduced abrasion of titanium dioxide pigments produced from the chloride process
    Publication number: 20070248822
    Abstract: Disclosed herein are pigments comprising mostly rutile TiO2, wherein the mostly rutile TiO2 consists essentially of low abrasion TiO2 particles produced by introducing a metal halide into the chloride process. Further disclosed are ink, can coatings, fibers, papers, and plastics comprising the pigment. Also disclosed herein are pigments comprising the low abrasion TiO2 pigments comprising TiO2 particles which have been further heat treated at a temperature of at least about 800° C. in an oxidizing atmosphere for a time period of at least about 1 hour.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Inventors: Michael Andrew Hofmann, Charles David Musick, Narayanan Sankara Subramanian, Kostaninos Kourtakis, Austin Henry Reid