Patents by Inventor Heiko Hellmers

Heiko Hellmers 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).

  • Composition and method for the chromium-free pretreatment of aluminium surfaces
    Patent number: 11686000
    Abstract: Described herein is an aqueous, chromium-free composition for a pretreatment of aluminum surfaces, which includes at least one water-soluble phosphorus compound, at least one water-soluble zirconium compound, at least one water-soluble titanium compound, and at least one water-soluble molybdenum compound, a phosphorus compound content being in a range from 15 to 50 mg/l (calculated as phosphorus), a zirconium compound content being in a range from 400 to 600 mg/l (calculated as metal), a titanium compound content being in a range from 85 to 400 mg/l (calculated as metal), and a molybdenum compound content being in a range from 40 to 150 mg/l (calculated as metal). Also described herein are a corresponding method and a correspondingly pretreated component or strip.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: June 27, 2023
    Assignee: CHEMETALL GMBH
    Inventors: Heiko Hellmers, Thomas Wendel, Norbert Maurus
  • COMPOSITION AND METHOD FOR THE CHROMIUM-FREE PRETREATMENT OF ALUMINIUM SURFACES
    Publication number: 20200063267
    Abstract: Described herein is an aqueous, chromium-free composition for a pretreatment of aluminum surfaces, which includes at least one water-soluble phosphorus compound, at least one water-soluble zirconium compound, at least one water-soluble titanium compound, and at least one water-soluble molybdenum compound, a phosphorus compound content being in a range from 15 to 50 mg/l (calculated as phosphorus), a zirconium compound content being in a range from 400 to 600 mg/l (calculated as metal), a titanium compound content being in a range from 85 to 400 mg/l (calculated as metal), and a molybdenum compound content being in a range from 40 to 150 mg/l (calculated as metal). Also described herein are a corresponding method and a correspondingly pretreated component or strip.
    Type: Application
    Filed: October 25, 2017
    Publication date: February 27, 2020
    Inventors: Heiko Hellmers, Thomas Wendel, Norbert Maurus