US PATENT SUBCLASS 148 / 506
.~.~.~ With chromium(Cr) in the mathematical 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  DF  .~ Utilizing disclosed mathematical formula or relationship {3}
505  DF  .~.~ Utilizing therein factors or percentages related to metal or metal alloy composition (i.e., including carbon content) {2}
506.~.~.~ With chromium(Cr) in the mathematical relationship

DEFINITION

Classification: 148/506

With chromium (Cr) in the mathematical relationship:

(under subclass 505) Process wherein a factor or percentage related to chromium (Cr) content is utilized in a mathematical formula or relationship.