Patents by Inventor David Schimpff

David Schimpff 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).

  • Pretreatment of metal surfaces prior to paint using polyaniline particles
    Patent number: 9028920
    Abstract: Embodiments of a method of pretreating a metal substrate prior to painting comprise applying a first coating solution onto the metal substrate wherein the first coating solution comprises polyaniline particles at a pH less than 7 to yield a first coating on the metal substrate, rinsing the metal substrate to remove unreacted polyaniline particles, and applying a second coating solution post-rinse which comprises at least one acid and a silane composition at a pH less than 7 to yield a second coating on the metal substrate.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: May 12, 2015
    Assignee: DuBois Chemicals, Inc.
    Inventors: David Schimpff, Bruce Dunham, William Frisz, Jun O. Zhang
  • PRETREATMENT OF METAL SURFACES PRIOR TO PAINT USING POLYANILINE PARTICLES
    Publication number: 20130260158
    Abstract: Embodiments of a method of pretreating a metal substrate prior to painting comprise applying a first coating solution onto the metal substrate wherein the first coating solution comprises polyaniline particles at a pH less than 7 to yield a first coating on the metal substrate, rinsing the metal substrate to remove unreacted polyaniline particles, and applying a second coating solution post-rinse which comprises at least one acid and a silane composition at a pH less than 7 to yield a second coating on the metal substrate.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 3, 2013
    Applicant: DUBOIS CHEMICALS, INC.
    Inventors: David Schimpff, Bruce Dunham, William Frisz, Jun Q. Zhang