US PATENT SUBCLASS 427 / 301
.~ Preapplied reactant or reaction promoter or hardener (e.g., catalyst, etc.)

Current as of: June, 1999
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427 /   HD   COATING PROCESSES

299  DF  WITH PRETREATMENT OF THE BASE {7}
301.~ Preapplied reactant or reaction promoter or hardener (e.g., catalyst, etc.) {2}
302  DF  .~.~> Resin, rubber, or hardenable oil containing coating {1}
304  DF  .~.~> Metal coating (e.g., electroless deposition, etc.) {1}

DEFINITION

Classification: 427/301

(under subclass 299) Processes wherein a material is applied to the base which will react with the coating, or promote a reaction or hardening of the coating, when said coating is applied.

SEE OR SEARCH THIS CLASS, SUBCLASS:

333, for applying a plurality of film forming coatings which react with each other.

337+, for applying a chemical agent to an applied coating and also for a process wherein the pretreating chemical agent supplies a substantial part of the final coating.