Patents by Inventor Larry L. Herfindal

Larry L. Herfindal 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).

  • Patent number: 8906467
    Abstract: Target substrates are electrostatically coated by flowing an electrically isolated wet coating composition containing waterborne coalescable polymeric binder into an electrostatic coating apparatus (100), depositing the coating composition onto a rotating electrostatically-charged atomizer (104) and then onto the target substrate, flowing an electrically isolated aqueous cleaning liquid into the apparatus before deposition of the coating composition onto the rotating atomizer is halted or interrupted, and depositing the aqueous cleaning liquid onto the atomizer before or within a sufficiently short time after a halt or interruption in coating composition deposition onto the atomizer so that a coalesced polymeric binder film does not accumulate on the atomizer.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: December 9, 2014
    Assignee: Valspar Sourcing, Inc.
    Inventors: Brian L. Marty, Heidi M. Turner, Larry L. Herfindal, Andrea J. Edwards
  • Publication number: 20130122212
    Abstract: Target substrates are electrostatically coated by flowing an electrically isolated wet coating composition containing waterborne coalescable polymeric binder into an electrostatic coating apparatus (100), depositing the coating composition onto a rotating electrostatically-charged atomizer (104) and thence onto the target substrate, flowing an electrically isolated aqueous cleaning liquid into the apparatus before deposition of the coating composition onto the rotating atomizer is halted or interrupted, and depositing the aqueous cleaning liquid onto the atomizer before or within a sufficiently short time after a halt or interruption in coating composition deposition onto the atomizer so that a coalesced polymeric binder film does not accumulate on the atomizer.
    Type: Application
    Filed: July 21, 2011
    Publication date: May 16, 2013
    Applicant: VALSPAR SOURCING, INC.
    Inventors: Brian L. Marty, Heidi M. Turner, Larry L. Herfindal, Andrea Anderson
  • Patent number: 8202581
    Abstract: A cement fiberboard substrate is treated on at least one edge of the substrate with an aqueous solution containing at least one phosphorus acid or salt of a phosphorus acid. The treated edge is overcoated with a sealer, primer or topcoat. The resulting prefinished fiber cement siding product has improved coating adhesion, especially near burnished regions and near edges and corners proximate the burnished regions. A phosphorus acid or salt of a phosphorus acid also may be added to the sealer to provide further improvement in coating adhesion.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: June 19, 2012
    Assignee: Valspar Sourcing, Inc.
    Inventors: Glen O. Vetter, Larry L. Herfindal, John W. Mittelsteadt, Heidi M. Turner, Andrew Ubel, Kevin W. Evanson
  • Publication number: 20080199725
    Abstract: A cement fiberboard substrate is treated on at least one edge of the substrate with an aqueous solution containing at least one phosphorus acid or salt of a phosphorus acid. The treated edge is overcoated with a sealer, primer or topcoat. The resulting prefinished fiber cement siding product has improved coating adhesion, especially near burnished regions and near edges and corners proximate the burnished regions. A phosphorus acid or salt of a phosphorus acid also may be added to the sealer to provide further improvement in coating adhesion.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 21, 2008
    Inventors: Glen Otto Vetter, Larry L. Herfindal, John W. Mittelsteadt, Heidi M. Turner, Andrew Ubel