Patents by Inventor Philippe Huwart

Philippe Huwart 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 coating compositions, methods for making same and uses thereof
    Patent number: 6140386
    Abstract: An aqueous unpigmented coating and printing composition useful for gravure and flexographic printing on plastic and metal substrates is provided by preparing an aqueous emulsion of a hydrophobic UV curable oligomer and a photoinitiator and adding about 1 to 10% by weight of the composition of a water soluble or reducible polymeric thickener in an amount effective to provide a viscosity of about 10 to 50 poises and specified rheology properties whereby the composition is capable of yielding clear cured films as low as about 2 microns in thickness.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: October 31, 2000
    Inventors: John W. Vanderhoff, Philippe Huwart
  • Printing ink compositions, methods for making same and uses thereof
    Patent number: 5830927
    Abstract: Aqueous based printing ink compositions adapted for use in gravure and flexographic printing on hydrophobic substrates are prepared by combining a low-viscosity resin emulsion having an average particle diameter of less than about 0.5 microns and comprised of hydrophobic, moisture resistant, adherent resin forming components with a pigment paste containing a water-soluble polymer. The printing inks are substantially devoid of volatile organic solvent.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: November 3, 1998
    Assignee: Lehigh University
    Inventors: John W. Vanderhoff, Philippe Huwart