US PATENT SUBCLASS 427 / 215
.~ Inorganic base

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

212  DF  PARTICLES, FLAKES, OR GRANULES COATED OR ENCAPSULATED {5}
215.~ Inorganic base {4}
216  DF  .~.~> Metal base
217  DF  .~.~> Metal coating
218  DF  .~.~> Pigment containing coating {1}
220  DF  .~.~> Organic coating {1}

DEFINITION

Classification: 427/215

(under subclass 212) Processes wherein the particulate base material being coated is inorganic.

(1) Note. For the purposes of this subclass coal particles are considered to be carbonaceous inorganic material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6, for coating particles wherein the base or coating contains radioactive material.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles, 570, for metal powder coated with a metal.