Patents by Inventor Rolf Dahlberg

Rolf Dahlberg 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).

  • Printed circuit board
    Patent number: 4675784
    Abstract: A printed circuit board having a supporting base element (1) of anodized aluminum. A glue film (4) is interposed between the supporting base element and a laminate layer (7) which has circuits (6a, 6b), the glue film sealing any pores in the anodic film of the supporting base element.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: June 23, 1987
    Inventors: Rolf Dahlberg, Tomas Dahlberg