Patents by Inventor M. Aaron Sparks

M. Aaron Sparks 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).

  • Low gloss powder coatings
    Patent number: 6737467
    Abstract: Powder coating compositions containing 5 to 60 wt % of spherical or near spherical particles having a median diameter of greater than 10, and most preferably of greater than 15 microns exhibit lower gloss without undesirable side effects such as loss of coating flow or creation of an “orange peel” effect.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: May 18, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Owen H. Decker, M. Aaron Sparks
  • UV curable powder coating compositions for improved through-cure
    Publication number: 20030125445
    Abstract: UV curable powder coating compositions containing 5 to 60 wt % spherical or near spherical particles having a median diameter of greater than 10, and most preferably greater than 15 microns, which refract and scatter applied UV light in all directions through the coating layer during curing to enhance the through-cure properties of the resulting coating.
    Type: Application
    Filed: October 11, 2002
    Publication date: July 3, 2003
    Inventors: Owen H. Decker, Frederick L. Bailey, Denis K. Desai, Zbigniew Stachyra, M. Aaron Sparks
  • Anti-microbial power coating
    Patent number: 6432416
    Abstract: Improved powder coatings exhibit enhanced resistance to bacterial and fungal attack, while possessing excellent toughness, appearance, corrosion resistance, durability, processability, and ease of application. The coating is comprised of anti-microbial agents melt-processed into the matrices of coating powders or bonded to coating powders. An article may be coated with a thermoset or thermoplastic powder that may be applied by electrostatic spray or fluidized bed or by thermal or flame spray.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: August 13, 2002
    Assignee: Dupont Powder Coatings USA, Inc.
    Inventors: Frederick L. Cummings, Peter Gottschling, Jeffrey R. Hagerlin, Owen H. Decker, M. Aaron Sparks