US PATENT SUBCLASS 252 / 393
.~.~.~ Phenol or quinone radical containing

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

380  DF  PRESERVATIVE AGENTS {3}
387  DF  .~ Anti-corrosion {1}
388  DF  .~.~ Organic compound containing {6}
393.~.~.~ Phenol or quinone radical containing

DEFINITION

Classification: 252/393

(under subclass 388) Compositions which contain organic compounds which contain a phenol or quinone radical (oxygen bonded directly to carbon of a benzene or naphthalene ring or other aromatic nucleus).