Patents by Inventor Koen Lips

Koen Lips 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).

  • Enameled steel and process for enameling a zinc or zinc-alloy precoated steel surface
    Patent number: 6524725
    Abstract: Enameled steel and process for enameling a zinc or zinc-alloy precoated steel surface includes providing steel having a surface to be precoated and enameled; applying a zinc or zinc-alloy coating having a thickness ranging from 1 to 30 &mgr;m to the surface of the steel to provide the zinc or zinc-alloy precoated steel surface; subjecting the zinc or zinc-alloy precoated steel surface to a heat pretreatment at a temperature of at least 500° C.; and enameling the zinc or zinc-alloy precoated steel surface with a vitreous enamel composition which has a content of adherence-providing oxides selected from the group consisting of Co, Ni, Cu, Sb and Mn of less than 0.1% by weight for a white enamel layer and less than 2.5% by weight for a colored enamel layer by firing the vitreous enamel composition to provide a vitreous enamel layer thereon.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: February 25, 2003
    Assignee: Enamels and Ceramic Coatings International C.V.
    Inventors: Koen Lips, Christian Schlegel
  • Enameling of aluminum alloys surfaces
    Patent number: 6517904
    Abstract: The present invention relates to a process for the enameling of aluminum or aluminum alloy surfaces, in particular containing a relatively high amount of Mg, Cu, or both, which is characterized by the use of a vitreous enamel containing CuO.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: February 11, 2003
    Assignee: Pemco Brugge N.V.
    Inventors: Marc Leveaux, Koen Lips, Nacy Crevits, Sebastien Humez