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:
Apr. 21, 2009
Filed:
Jun. 07, 2004
Kai-jens Matejat, Oberkrämer, DE;
Sven Lamprecht, Oberkrämer, DE;
Kai-Jens Matejat, Oberkrämer, DE;
Sven Lamprecht, Oberkrämer, DE;
Atotech Deutschland GmbH, , DE;
Abstract
A method for the regeneration of etching solutions containing iron for the use in etching or pickling copper or copper alloys and an apparatus for carrying out the method is described. The method involves feeding the etching solution to be regenerated from the etching system into an electrolysis cell being hermetically sealed or having an anode hood (), the electrolysis cell comprising a cathode (), an inert anode (), means () for removing the electrolytically deposited copper from the cathode and means () for collecting the removed copper and applying a potential to the removed copper, wherein the electrolysis cell does not have an ion exchange membrane or a diaphragm.