US PATENT SUBCLASS 204 / 495
.~.~.~.~.~ With pretreatment of substrate or bath

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

*  DD  PROCESSES AND PRODUCTS {7}
450  DF  .~ Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere {14}
471  DF  .~.~ Coating or forming of object {13}
489  DF  .~.~.~ Using bath having designated chemical composition (DCC) {5}
492  DF  .~.~.~.~ Anodic processes only {5}
495.~.~.~.~.~ With pretreatment of substrate or bath

DEFINITION

Classification: 204/495

With pretreatment of substrate or bath:

(under subclass 492) Process in which either the substrate or the coating bath is treated to prepare for the coating process.

(1) Note. Placement in this subclass requires positive recitation of one or more pretreatment steps and does not provide for the mere use of a substrate or bath composition which was previously made by an unrecited method.

(2) Note. Pretreatment appropriate for this subclass includes: coating of individual particles which are subsequently electrophoretically coated onto a substrate, chemical reaction to prepare a bath for electrophoresis, and prewetting of a substrate to enhance bonding of an electrophoretic coating. This subclass is not intended to provide for mere mixing of a coating bath unless combined with clear recitation of a treatment to chemically or otherwise alter the bath to promote subsequent coating of at least a part thereof onto a substrate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

510, for other electrophoretic or electro-osmotic coating processes with pretreatment of the substrate.