Patents by Inventor Thomas Helden

Thomas Helden 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).

  • Electrolyte composition and method for the deposition of a zinc-nickel alloy layer on a cast iron or steel substrate
    Patent number: 8435398
    Abstract: The present invention relates to an electrolyte composition as well as a method for the deposition of zinc-nickel alloy layers on substrates, in particular cast iron or steel substrates. The electrolyte compositions according to the invention comprise aminoacetic acid. The alloy layers deposited from the electrolyte compositions according to the invention are corrosion resistant and bright and nearly have no internal tension.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: May 7, 2013
    Assignee: Enthone Inc.
    Inventors: Dieter Gollan, Gerard Patron, Thomas Helden, Andreas Heinz Kirchhof
  • Electrolyte Composition and Method for the Deposition of a Zinc-Nickel Alloy Layer on a Cast Iron Or Steel Substrate
    Publication number: 20080110762
    Abstract: The present invention relates to an electrolyte composition as well as a method for the deposition of zinc-nickel alloy layers on substrates, in particular cast iron or steel substrates. The electrolyte compositions according to the invention comprise aminoacetic acid. The alloy layers deposited from the electrolyte compositions according to the invention are corrosion resistant and bright and nearly have no internal tension.
    Type: Application
    Filed: July 13, 2007
    Publication date: May 15, 2008
    Applicant: Enthone Inc.
    Inventors: Dieter Gollan, Gerard Patron, Thomas Helden, Andreas Heinz Kirchhof
  • Zinc-nickel electrolyte and method for depositing a zinc-nickel alloy therefrom
    Publication number: 20030085130
    Abstract: A method for depositing a zinc-nickel alloy from a zinc-nickel electrolyte to which an additive has been added in order to broaden the usable current density range. An electrolyte suitable for this method is also presented. The additive is an aromatic or aliphatic carboxylic acid, salt, or derivative. The additive provides for the use of ammonium-free electrolytes.
    Type: Application
    Filed: September 23, 2002
    Publication date: May 8, 2003
    Applicant: Enthone Inc.
    Inventors: Wilhelmus Maria Johannes Cornelis Verberne, Karl-Heinz Wandner, Thomas Helden
  • Water soluble brighteners for zinc and zinc alloy electrolytes
    Patent number: 6238542
    Abstract: A process for the galvanic precipitation of zinc deposits and/or zinc alloy deposits on a metallic surface, working with an aqueous acid electrolyte which contains at least one zinc salt as well as at least one high-gloss agent. At least one heterocyclic aromatic compound is added to the electrolyte, with at least one alkylated nitrogen atom as the heteroatom.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: May 29, 2001
    Inventor: Thomas Helden