The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2004
Filed:
Dec. 21, 2000
Heinrich Meyer, Berlin, DE;
Ralf Schulz, Hohen Neuendorf, DE;
Roland Heinz, Northeim, DE;
Eckart Klusmann, Troisdorf, DE;
Atotech Deutschland GmbH, Berlin, DE;
Abstract
For manufacturing substrate materials which are needed for the manufacture of electrical circuit carriers, methods are known in which metal layers are applied to a dielectric substrate by means of a glow discharge process and thereafter additional metal layers are applied by means of electroplating processes. These methods however are not suitable for the manufacture of substrate materials which are suitable for high frequency applications in the gigahertz range. The invention starts from the previously-mentioned methods and solves the described problem through the use of fluoropolymers and through coating of these materials by means of a glow discharge process with nickel, since by this means even very smooth surfaces of the substrate can be securely coated. The metallised materials can be coated with additional metal layers from electroless or electrolytic deposition baths.