US PATENT SUBCLASS 252 / 381
.~ Anti-caking, separative or protective coatings or zones

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

380  DF  PRESERVATIVE AGENTS {3}
381.~ Anti-caking, separative or protective coatings or zones {4}
382  DF  .~.~> Foams, liquids, or fluids
383  DF  .~.~> Organic and inorganic matter containing
384  DF  .~.~> Organic compound containing
385  DF  .~.~> Inorganic compound or element containing

DEFINITION

Classification: 252/381

(under subclass 380) Compositions specialized and designed for or peculiar to use as or in agents for preventing, inhibiting or reducing caking of granular material, or use in the form of distinct coating blankets, layers or zones with respect to the materials with which they are associated respectively.

(1) Note. For compositions each of which contains a main substance and an agent for inhibiting caking of granules of the main substance, search where the main substance is classifiable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2+, for fire extinguishing.

601+, for fire-retarding agents.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, 303+, for solid treating compositions for molten metal and subclass 709 for processes of covering the surface of molten metal with a material to prevent contact with the ambient atmosphere.

106, Compositions: Coating or Plastic, for coating compositions.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

40+, for process of storage or protection using a protective layer over the material being stored or protected.