US PATENT SUBCLASS 252 / 397
.~ Anti-oxidants or chemical change inhibitants

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

380  DF  PRESERVATIVE AGENTS {3}
397.~ Anti-oxidants or chemical change inhibitants {2}
398  DF  .~.~> Plant or animal matters of unknown compositions
399  DF  .~.~> Organic compound containing {8}

DEFINITION

Classification: 252/397

(under subclass 380) Compositions specialized and designed for, or peculiar to, use or in anti-oxidants or agents for preventing, inhibiting, or reducing oxidation, chemical decomposition, or other chemical change.

(1) Note. For compositions each of which contains a main substance and an agent for inhibiting chemcial decomposition or other chemical change of the main substance, search where the main substance is classifiable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

381+, for protective layers.

386, for agents for inhibiting knock or explosions.

387+, for anticorrosion agents.