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:
Oct. 14, 2003
Filed:
Feb. 27, 2002
Axel Schäfer, Tuningen, DE;
Oswald Beetz, Nürnberg, DE;
Jürgen Hackeŕt, Grünbach, DE;
Bolta-Werke GmbH, , DE;
Abstract
Described is a process for producing a self-supporting metal foil ( ), in particular copper foil, which by virtue of its constitution has a low shearing strength and which can be structured in a sharp-edged configuration. In this case a base layer of the metal foil ( ) is galvanically deposited on a roller cathode ( ). A cauliflower structure ( ) comprising the metal is deposited in firmly adhering relationship on the metal base layer ( ) by means of an additional anode ( ) provided between the roller cathode ( ) and the anode cage ( ). The metal foil ( ) comprising the metal base layer ( ) and the cauliflower structure ( ) is detached from the roller cathode ( ), rinsed and dried. The dried foil ( ) comprising the metal base layer ( ) provided with the cauliflower structure ( ) is moved through a black oxide bath ( ). There then follows a rinsing operation and a drying operation.