Patents by Inventor W. David Polk

W. David Polk 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).

  • AQUEOUS DISPERSIONS OF POLYMER-ENCLOSED PARTICLES, RELATED COATING COMPOSITIONS AND COATED SUBSTRATES
    Publication number: 20090326098
    Abstract: Disclosed are aqueous dispersions of polymer-enclosed particles, such as nanoparticles. Also disclosed are methods for making an aqueous dispersion of polymer-enclosed particles, polymerizable polymers useful in such a method, powder coating compositions formed from such an aqueous dispersion, substrates at least partially coated with such a composition, and reflective surfaces comprising a non-hiding coating layer deposited from such a composition.
    Type: Application
    Filed: September 8, 2009
    Publication date: December 31, 2009
    Inventors: Joseph M. Ferencz, W. David Polk, Dennis L. Faler
  • Ink compositions and related methods
    Patent number: 7612124
    Abstract: Disclosed are ink compositions comprising a liquid vehicle and a colorant, wherein the colorant comprises polymer-enclosed color-imparting particles, wherein the particles are enclosed by a friable polymer. Also disclosed are methods for making an ink composition and methods for improving the transparency of an ink composition comprising a pigment colorant.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: November 3, 2009
    Assignee: PPG Industries Ohio, Inc.
    Inventors: W. David Polk, Dennis L. Faler, Noel R. Vanier, Eldon L. Decker
  • Aqueous dispersions of polymer-enclosed particles, related coating compositions and coated substrates
    Patent number: 7605194
    Abstract: Disclosed are aqueous dispersions of polymer-enclosed particles, such as nanoparticles. Also disclosed are methods for making an aqueous dispersion of polymer-enclosed particles, polymerizable polymers useful in such a method, powder coating compositions formed from such an aqueous dispersion, substrates at least partially coated with such a composition, and reflective surfaces comprising a non-hiding coating layer deposited from such a composition.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: October 20, 2009
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Joseph M. Ferencz, W. David Polk, Dennis L. Faler
  • AQUEOUS DISPERSIONS OF POLYMER-ENCLOSED PARTICLES, RELATED COATING COMPOSITIONS AND COATED SUBSTRATES
    Publication number: 20090042020
    Abstract: Disclosed are aqueous dispersions of polymer-enclosed particles, such as nanoparticles. Also disclosed are methods for making an aqueous dispersion of polymer-enclosed particles, polymerizable polymers useful in such a method, powder coating compositions formed from such an aqueous dispersion, substrates at least partially coated with such a composition, and reflective surfaces comprising a non-hiding coating layer deposited from such a composition.
    Type: Application
    Filed: October 23, 2008
    Publication date: February 12, 2009
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Joseph M. Ferencz, W. David Polk, Dennis L. Faler
  • PIGMENT DISPERSANT
    Publication number: 20080188610
    Abstract: A pigment dispersant is disclosed comprising a tri-block copolymer having a first block comprising a glycidyl (meth)acrylate reacted with a napthoic acid, a second block comprising (meth)acrylic acid alkyl esters, and a third block comprising (meth)acrylic acid alkyl esters, wherein said third block is different from said second block. The dispersant is suited for use in a nanoparticulate dispersion comprising pigment particles having an average primary particle size of less than 100 nm.
    Type: Application
    Filed: March 25, 2008
    Publication date: August 7, 2008
    Applicant: PPG INDUSTRIES OHIO, INC.
    Inventors: W. David Polk, Eldon L. Decker, Noel R. Vanier, Brian E. Woodworth
  • High refractive index polymerizable composition
    Publication number: 20040021133
    Abstract: The present invention is directed to a polymerizable composition including a polymerizable monomer component and a nanoparticle material, having a refractive index of from 1.595 to 1.695. When at least partially cured, the polymerizable composition is especially useful for ophthalmic applications.
    Type: Application
    Filed: June 25, 2003
    Publication date: February 5, 2004
    Inventors: Vidhu J. Nagpal, Phillip C. Yu, W. David Polk, James P. Colton