US PATENT SUBCLASS 148 / 272
.~.~.~ Coating or treating a metal oxide with a specified composition

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}
272.~.~.~ Coating or treating a metal oxide with a specified composition

DEFINITION

Classification: 148/272

Coating or treating a metal oxide with a specified composition:

(under subclass 243) Subject matter wherein the process includes a subsequent treatment of a disclosed or claimed metal oxide layer with a specified composition.

(1) Note. Specified for purposes of this subclass requires that at least one chemical atom of the composition be identified in the claims.

(2) Note. This subclass provides for processes and composition wherein the actual step of producing the metal oxide is not claimed and the claim itself is to treating the metal oxide disclosed as formed by a process proper under subclass 243 with a "specified" composition.