US PATENT SUBCLASS 148 / 261
.~.~.~.~ Contains an atom of arsenic, boron or metal atom other than alkali metal

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}
253  DF  .~.~.~ Contains phosphorus {6}
261.~.~.~.~ Contains an atom of arsenic, boron or metal atom other than alkali metal {1}
262  DF  .~.~.~.~.~> Contains an atom of iron or manganese or a group II metal atom (Be, Ca, Sr, Ba, Zn, Cd, Hg) {1}

DEFINITION

Classification: 148/261

Contains an atom of arsenic, boron or metal atom other than alkali metal:

(under subclass 253) Subject matter wherein the liquid reactive coating composition contains at least one phosphorus atom and at least one atom of arsenic, boron or of a metal atom other than alkali metal.

(1) Note. Excluded herefrom as alkali metals are lithium, sodium, potassium, rubidium, cesium and francium.