US PATENT SUBCLASS 148 / 535
.~.~.~ Aluminum(Al) or aluminum base alloy present

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}
516  DF  .~ Producing or treating layered, bonded, welded, or mechanically engaged article or stock as a final product {9}
527  DF  .~.~ With metal next to or bonded to metal {4}
535.~.~.~ Aluminum(Al) or aluminum base alloy present

DEFINITION

Classification: 148/535

Aluminum (Al) or aluminum base alloy present:

(under subclass 527) Process wherein at least one of the layers or parts is aluminum(Al) or an aluminum alloy containing greater than 50 percent aluminum.