Patents by Inventor Helmut Riestenpatt

Helmut Riestenpatt 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).

  • Self-cross linking powder paint based on epoxy resins and the use thereof
    Patent number: 6749896
    Abstract: A self-crosslinking powder coating material, comprising (A) up to 50% by weight, based on the powder coating material, of a mixture of (A1) at least one epoxy resin with an epoxy equivalent weight (EEW) <800 g, (A2) at least one epoxy resin with an epoxy equivalent weight (EEW) of from 800 to 1500 g, and (A3) at least one epoxy resin with an epoxy equivalent weight (EEW) >1500 g, and (B) at least 50% by weight, based on the powder coating material, of at least one filler; and its use to coat shaped parts, especially engine blocks, which after coating are shaped by machining.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: June 15, 2004
    Assignee: BASF Coatings AG
    Inventors: Rolf Boysen, Helmut Riestenpatt, Christoph Hilger, Carsten Vietze, Josef Rademacher
  • Powder paints and the use thereof for producing low-noise powder paint coatings
    Patent number: 6624229
    Abstract: The present invention relates to a powder coating material which contains preferably from 0.05 to 5% by weight, preferably from 0.5 to 2% by weight, of at least one polyethylene wax distributed homogeneously within the powder coating material.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: September 23, 2003
    Assignee: BASF Coatings AG
    Inventors: Helmut Riestenpatt, Rolf Boysen, Birgit Perdun
  • Self-cross linking powder paint based on epoxy resins and the use thereof
    Publication number: 20030153668
    Abstract: A self-crosslinking powder coating material, comprising
    Type: Application
    Filed: December 16, 2002
    Publication date: August 14, 2003
    Inventors: Rolf Boysen, Helmut Riestenpatt, Christoph Hilger, Carsten Vietze, Josef Rademacher
  • Triboelectric chargeable coating powder
    Patent number: 6242052
    Abstract: The present invention relates to triboelectrically chargeable powder coating materials to which benzimidazole-based additives are added.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: June 5, 2001
    Assignee: BASF Coatings AG
    Inventors: Christoph Hilger, Rolf Boysen, Helmut Riestenpatt, Ulrike Schlösser, Erwin Czech, Udo Mayer, Gunther-Rudolf Schröder, Benno Sens