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:
Jun. 06, 2006
Filed:
May. 15, 2001
Reinhard DE Boer, Berlin, DE;
Sebastian Dünnebeil, Berlin, DE;
Reinhard De Boer, Berlin, DE;
Sebastian Dünnebeil, Berlin, DE;
Atotech Deutschland GmbH, Berlin, DE;
Abstract
In order to regenerate permanganate solutions being utilized for the etching and roughening of plastics surfaces electrolytic methods are known. Though relatively small quantaties of by-products are produced with these methods as compared to chemical regeneration methods, large quantaties of manganese dioxide are produced when printed circuit boards are treated. In order to avoid formation of manganese dioxide during the regeneration method a novel cathodehas been found which is provided with a porous, electrically nonconducting layeron the cathode body. The layerpreferably consists of a plastics material being resistant to acid and/or alkali.