US PATENT SUBCLASS 148 / 714
.~.~ Localized or zone heating or cooling treatment

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}
559  DF  .~ Heating or cooling of solid metal {22}
714.~.~ Localized or zone heating or cooling treatment

DEFINITION

Classification: 148/714

Localized or zone heating or cooling treatment:

(under subclass 559) Process wherein a portion or several portions but less than the total of a metal workpiece is subjected to a heating or cooling treatment that limits the change in microstructure to localized areas or zones as opposed to the entire workpiece.

CROSS-REFERENCE ART COLLECTIONS

These Cross-Reference Art Collections pertain to subclasses 400+ stock.