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:
May. 23, 1995
Filed:
Jan. 21, 1994
Applicant:
Inventors:
Albert L Askin, Lower Burrell, PA (US);
Paul B Schultz, Export, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25F / ; C09K / ; C11D / ; C23G / ;
U.S. Cl.
CPC ...
2041291 ; 2041415 ; 20412995 ; 252 793 ; 252101 ; 428687 ; 428938 ; 134-3 ;
Abstract
A method of forming a highly reflective surface on aluminum alloys, the composition comprising (a) brightening the surface of a body formed from an aluminum alloy; and (b) desmutting the freshly brightened body in a bath. The desmutting bath comprises 10-100 volume percent nitric acid; 0-60 volume percent sulfuric acid; 0-50 volume percent water; and at least 15 grams per liter of a source of bifluoride. Ammonium fluoride is the preferred source of fluoride.