Metal treatment – Process of modifying or maintaining internal physical... – With casting or solidifying from melt
Reexamination Certificate
2011-08-23
2011-08-23
King, Roy (Department: 1733)
Metal treatment
Process of modifying or maintaining internal physical...
With casting or solidifying from melt
C148S415000, C148S417000, C148S418000, C148S550000, C420S532000, C420S534000, C420S540000, C420S542000
Reexamination Certificate
active
08002913
ABSTRACT:
An AA7000-series alloy including 3 to 10% Zn, 1 to 3% Mg, at most 2.5% Cu, Fe <0.25%, and Si >0.12 to 0.35%, and a method of manufacturing these aluminum alloy products. More particularly, disclosed are aluminum wrought products in relatively thick gauges, in particular i.e. about 30 to 300 mm thick. While typically practiced on rolled plate product forms, this method may also find use with manufacturing extrusions or forged product shapes. Representative structural component parts made from the alloy product include integral spar members, and the like, which are machined from thick wrought sections, including rolled plate.
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Khosla Sunil
Norman Andrew
Van Schoonevelt Hugo
Aleris Aluminum Koblenz GmbH
Fogarty Caitlin
King Roy
Novak Druce & Quigg LLP
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