US PATENT SUBCLASS 562 / 435
.~.~.~.~.~ 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}
433  DF  .~.~.~ Nitrogen bonded directly to carbon of organic radical (e.g., amino acids, etc.) {9}
434  DF  .~.~.~.~ Nitro or nitroso {3}
435.~.~.~.~.~ Plural rings {1}
436  DF  .~.~.~.~.~.~> Plural rings bonded directly to the same carbonyl

DEFINITION

Classification: 562/435

Plural rings:

(under subclass 434) Compounds wherein the acid contains more than one carbocyclic group, at least one of which is aromatic.

(1) Note. This subclass contains, for example: [figure] [figure]