US PATENT SUBCLASS 148 / 221
.~.~ With casting or solidifying from melt

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}
206  DF  .~ Carburizing or nitriding using externally supplied carbon or nitrogen source {15}
221.~.~ With casting or solidifying from melt

DEFINITION

Classification: 148/221

With casting or solidifying from melt:

(under subclass 206) Process wherein a metal or metal alloy is cast or a total mass (i.e., not just a portion or coating) of metal is solidified from a melted state.

(1) Note. Coating from a melt is excluded from this subclass even though the coating is solidified.