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. 21, 1983
Filed:
Aug. 03, 1981
Applicant:
Inventor:
August Muhlratzer, Gilching, DE;
Assignee:
Man Maschinenf Abrik Augsburn-Nurnberg, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C25D / ; C25D / ;
U.S. Cl.
CPC ...
428667 ; 126901 ; 204 41 ; 204 / ; 428666 ;
Abstract
A black chrome electrolyte for the formation of selective layers for solar collectors electrolyte comprising chromium trioxide (CrO.sub.3), fluorosilic acid (H.sub.2 SiF.sub.6) as a catalyst and soidum molybdate (Na.sub.2 MoO.sub.4. 2H.sub.2 O). A substrate is brought into contact with the electrolyte at a current density of 0.40 to 0.60 Acm.sup.-2 and a bath temperature of less than 20.degree. C. for 15 to 30 secs.