US PATENT SUBCLASS 148 / 254-- .~.~.~.~ Liquid composition applied prior to reaction of metal substrate with phosphorus (e.g., cleaning, activating, etc.)

US PATENT SUBCLASS 148 / 254
.~.~.~.~ Liquid composition applied prior to reaction of metal substrate with phosphorus (e.g., cleaning, activating, 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}
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}
254		.~.~.~.~ Liquid composition applied prior to reaction of metal substrate with phosphorus (e.g., cleaning, activating, etc.)

DEFINITION

Classification: 148/254

Liquid composition applied prior to reaction of metal substrate with phosphorus (e.g., cleaning, activating, etc.):

(under subclass 253) Subject matter wherein a liquid composition is applied to the metal substrate prior to the application of the liquid reactive composition containing a phosphorus atom in either an elemental or compound form which is reactive with the metal substrate.

(1) Note. This subclass takes liquid preparatory treatments of the metal substrate prior to reaction with the metal substrate. In certain instances, however, the step prior to reaction with phosphorus can involve an additional reaction with the substrate.

(2) Note. This subclass provides for processes and compositions wherein the preliminary step of applying a material to the substrate prior to reaction is claimed and no claim provides for the subsequent reaction with phosphorus.