US PATENT SUBCLASS 562 / 425
.~.~.~.~.~ Having plural rings

Current as of: June, 1999
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562 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
400  DF  .~ Carboxylic acids and salts thereof {14}
405  DF  .~.~ Aromatic {13}
423  DF  .~.~.~ Preparation by carbonation {1}
424  DF  .~.~.~.~ Of alkali metal phenolates {1}
425.~.~.~.~.~ Having plural rings

DEFINITION

Classification: 562/425

Having plural rings:

(under subclass 424) Processes wherein the alkali metal phenolate contains plural rings, as for example, a naphtholate which will produce a hydroxy naphthoic acid under the conditions of reaction.