US PATENT SUBCLASS 148 / 619
.~.~.~ Containing 10 percent or more manganese(Mn) (e.g., Hadfield steel, etc.)

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}
579  DF  .~.~ Iron(Fe) or iron base alloy {24}
619.~.~.~ Containing 10 percent or more manganese(Mn) (e.g., Hadfield steel, etc.) {1}
620  DF  .~.~.~.~> With working

DEFINITION

Classification: 148/619

Containing 10 percent or more manganese(Mn) (e.g., Hadfield steel, etc.):

(under subclass 579) Process wherein the iron alloy undergoing treatment contains 10 percent or more manganese(Mn) (e.g., Hadfield steel, etc.).