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. 16, 1992
Filed:
Feb. 22, 1990
Applicant:
Inventors:
Joseph R Pickens, Beltsville, MD (US);
Frank H Heubaum, Baltimore, MD (US);
Lawrence S Kramer, Baltimore, MD (US);
Assignee:
Martin Marietta Corporation, Bethesda, MD (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
420533 ; 148417 ; 148418 ; 148439 ; 420534 ; 420535 ;
Abstract
Welding alloys based upon aluminum, copper, mangesium, silver and lithium have been found to possess exceptional properties such as resistance to hot cracking, high strength and ductility, and an unexpected natural aging response. The aluminum-base alloys may contain 3.5 to 7 weight percent Cu, 0.05 to 1.5 weight percent Mg, 0.01 to 2 weight percent Ag, 0.1 to 4 weight percent Li, and 0.01 to 2 weight percent grain refiner.