Patents by Inventor Godefridus Heijnen

Godefridus Heijnen 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).

  • Electric lamp having a metal foil with a convexly and concavely curved surface
    Patent number: 4851733
    Abstract: An electric lamp has elongated metal foils as a part of the current conductor lead-throughs. Each metal foil has major surfaces which meet one another along each opposing side edge of the foil at an acute angle. The metal foil has a cross-section transverse to the side edges. At least one of the major surfaces has a pair of concave curvature portions each adjoining a respective side edge, and a convex curvature portion extending between the pair of concave curvature portions.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: July 25, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Gijsbert H. C. Kuus, Godefridus Heijnen