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. 29, 1976
Filed:
May. 21, 1975
Applicant:
Inventors:
Frank N Mandigo, North Branford, CT (US);
Philip R Sperry, North Haven, CT (US);
Assignee:
Swiss Aluminium Ltd., Chippis, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 / ; 148 32 ;
Abstract
Wrought aluminum alloy sheet products, displaying good ductility and resistance to grain coarsening when subjected to elevated temperatures as in brazing operations, are prepared by a process in which there is a final cold reduction of at least 50% and a subsequent partial annealing treatment sufficient to effect the recrystallization of 50 to 99% by volume of the metal. The resulting sheet products including composites have a substantially uniform grain structure characterized by the presence of mostly recrystallized grains, by uniformly distributed unrecrystallized grain fragments, and by the absence of coarse grains.