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, 1989
Filed:
Sep. 16, 1987
Applicant:
Inventors:
Assignee:
Alcan International Limited, Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
420528 ; 420590 ;
Abstract
Aluminium is alloyed by adding alloying ingredients to the molten metal in an intermediate treatment vessel or ladle rather than as at present in a casting furnace. If several ladles are used to supply the casting furnace, the alloying ingredients may be added to some but not all of them. A preferred order of addition of alloying ingredients is: (i) AlF.sub.3 to reduce unwanted Na, Ca and Li; (ii) one or more of Mn, Fe, Cr, Ni, Cu, Zn and Si in powder form; (iii) one or more of Zn, Cu and Si in massive form; (iv) Mg. A ladle/impeller design is described.
Dube, Ghyslain. (1989). Method of alloying aluminium (U.S. Patent No. 4832911). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4832911
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile