Patents by Inventor Edwin J. H. Hummelink

Edwin J. H. Hummelink 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).

  • Method for manufacturing of a multilayer microwave board and boards obtained on the basis of this method
    Patent number: 6233820
    Abstract: Method for manufacturing a multilayer microwave board in one operation. Individually etched layers of a laminate, such as duroid, are bonded to form a package and drilled after which the resulting holes are plated. Next, the superfluous connections are removed by drilling during which process each stripline-coax transition buried in the package is tuned by a correct selection of the drill diameter and the hole depth.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: May 22, 2001
    Assignee: Hollandse Signaalapparaten B.V.
    Inventor: Edwin J. H. Hummelink