US PATENT SUBCLASS 148 / 270
.~.~.~ Contains an atom of sulfur, selenium or tellurium

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}
240  DF  .~ Processes of coating utilizing a reactive composition which reacts with metal substrate or composition therefore {12}
243  DF  .~.~ Liquid reactive coating composition utilized {16}
270.~.~.~ Contains an atom of sulfur, selenium or tellurium {1}
271  DF  .~.~.~.~> Contains organic sulfur compound

DEFINITION

Classification: 148/270

Contains an atom of sulfur, selenium or tellurium:

(under subclass 243) Subject matter wherein a reactive liquid composition containing an atom of sulfur, selenium or tellurium is applied to a metal substrate.

(1) Note. The sulfur, selenium or tellurium, required for this subclass may or may not be reactive with the metal substrate.