Patents by Inventor Cornelis Spooren

Cornelis Spooren 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).

  • Semi-product for lighting purposes, a method and an apparatus for the production of such product
    Publication number: 20020124616
    Abstract: This invention pertains to a method for producing a semi-product for lighting purposes. The semi-product is produced by forming fields or stripes on a substrate, and then shaping the substrate into a configuration. The fields or stripes exhibit different lighting and/or aesthetic properties.
    Type: Application
    Filed: May 13, 2002
    Publication date: September 12, 2002
    Inventors: Merete Hallenstvet, Cornelis Spooren
  • Procedure for electrochemical polishing of an aluminium substrate to obtain a specular surface
    Patent number: 6428682
    Abstract: A process for removing or reducing the directionality or anisotropy of a surface and for making the surface specular on a substrate material consisting of aluminium or an aluminium alloy, by (a) chemically etching the substrate material, (b) subjecting the etched substrate material substrate material to electrochemical polishing by using a solution, and (c) subjecting the substrate material to additional chemical etching and electrochemical polishing directly after step (b), wherein the surface of the substrate material is not exposed to air between the etching and the electrochemical polishing.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: August 6, 2002
    Assignees: Norsk Hydro ASA, Glamox Fabrikker AS
    Inventors: John Erik Lein, Cornelis Spooren, Jostein Mårdalen, Jan Morten Søraker, Merete Hallenstvet