US PATENT SUBCLASS 427 / 309
.~.~ Inorganic base

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

299  DF  WITH PRETREATMENT OF THE BASE {7}
307  DF  .~ Etching, swelling, or dissolving out part of the base {2}
309.~.~ Inorganic base

DEFINITION

Classification: 427/309

(under subclass 307) Processes wherein the substrate is based on an inorganic material.

(1) Note. This subclass does not include mere pickling unless etching of the base is set forth.

(2) Note. Attention is directed to the definition of Class 260, Chemistry of Carbon Compounds, for the distinction between the term "organic" and "inorganic".

SEE OR SEARCH THIS CLASS, SUBCLASS:

327+, for pickling a metal base prior to coating.