US PATENT SUBCLASS 148 / 509
.~.~ Magnetic or electrical property

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}
508  DF  .~ With measuring, testing, or sensing {3}
509.~.~ Magnetic or electrical property

DEFINITION

Classification: 148/509

Magnetic or electrical property:

(under subclass 508) Process wherein a magnetic or electrical property is measured, tested, or sensed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

100+, for processes which include the intent of developing, modifying or preserving the magnetic properties, per se, of a free metal or alloy.

(1) Note. In many cases of metal treatment, magnetic properties are inherently changed. The mere use of magnetic property changes to determine other microstructural changes or to follow the course of the process is proper hereinunder unless the emphasis and intent is consistent with subclasses 100+. If there is any doubt as to intent, hierarchy prevails and a cross-reference to other parts of this class is advisable.