US PATENT SUBCLASS 148 / 502
.~.~.~ Aluminum(Al) or aluminum base alloy

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
500  DF  .~ Utilizing disclosed mathematical formula or relationship {3}
501  DF  .~.~ Nonferrous metal, nonferrous based alloy or no-base alloy {1}
502.~.~.~ Aluminum(Al) or aluminum base alloy

DEFINITION

Classification: 148/502

Aluminum (Al) or aluminum base alloy:

(under subclass 501) Process wherein aluminum or an alloy containing greater than 50 percent aluminum is the nonferrous based metal.