Patents by Inventor Horst Hirschfeld

Horst Hirschfeld 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).

  • Process for manufacturing base material for printed circuits
    Patent number: 3948701
    Abstract: In a process for making a printed circuit, a method of forming a base for the circuit, including coating a cover foil with a decomposable film, then bonding the film to a carrier, and then removing the cover foil from the film.A protected base useful for making printed circuits, comprising a synthetic-resin-based carrier, a decomposable adhesive film bonded to the carrier, and a removable cover foil bonded to the film, the adhesive film containing catalyst effective for the electroless deposition of metal conductors.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: April 6, 1976
    Assignee: AEG-Isolier-und Kunststoff GmbH
    Inventors: Helmut Fasbender, Horst Hirschfeld