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:
Jan. 08, 1985
Filed:
Aug. 19, 1983
Applicant:
Inventors:
Engelbert Pliefke, Wiesbaden, DE;
Gerhard Usbeck, Wiesbaden, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ;
U.S. Cl.
CPC ...
204 33 ; 204 / ; 204 58 ; 20412975 ; 101456 ; 101459 ; 430159 ; 430278 ; 430300 ; 430302 ; 430327 ;
Abstract
A process is disclosed for manufacturing sheets, foils, or strips which involves chemically, mechanically, and/or electrochemically roughening and anodically oxidizing aluminum or aluminum alloy surfaces, followed by two post-treatment steps. In the first step, the metal surface is treated with an aqueous alkali metal silicate solution; thereafter, the surface is treated with an aqueous solution comprising alkaline earth metal ions. The materials produced according to this process are particularly used as supports for offset-printing plates.