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:
Sep. 15, 1987
Filed:
Nov. 18, 1985
Applicant:
Inventors:
Philip E Bretz, Plum Boro, PA (US);
Jocelyn I Petit, New Kensington, PA (US);
Ralph R Sawtell, Squirrel Hill, PA (US);
Asuri K Vasudevan, Plum Boro, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
75249 ; 75246 ; 148 / ; 148 / ; 148 / ; 148 / ; 148 / ; 148 / ; 148415 ; 148417 ; 148439 ; 419 23 ; 419 48 ; 419 54 ; 419 55 ; 420417 ; 420534 ;
Abstract
Disclosed is a metal alloy product having increased resistance to fatigue crack growth and having coarse grains distributed in a fine grain structure, the coarse grains having a different alloy composition from the fine grain structure.