US PATENT SUBCLASS 148 / 500
.~ Utilizing disclosed mathematical formula or relationship

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.~ Utilizing disclosed mathematical formula or relationship {3}
501  DF  .~.~> Nonferrous metal, nonferrous based alloy or no-base alloy {1}
503  DF  .~.~> Utilizing therein symbol for temperature {1}
505  DF  .~.~> Utilizing therein factors or percentages related to metal or metal alloy composition (i.e., including carbon content) {2}

DEFINITION

Classification: 148/500

Utilizing disclosed mathematical formula or relationship:

(under subclass 95) Process wherein a mathematical formula or relationship containing variables is disclosed and utilized in the claimed process.

(1) Note. The mere use of constants or percentages, per se, does not meet the criteria for this subclass.