US PATENT SUBCLASS 560 / 57
.~.~.~.~ Plural rings bonded directly to the same acyclic carbon in acid moiety

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
1  DF  .~ Carboxylic acid esters {14}
8  DF  .~.~ Aromatic acid moiety {9}
55  DF  .~.~.~ Oxy in acid moiety {7}
57.~.~.~.~ Plural rings bonded directly to the same acyclic carbon in acid moiety {1}
58  DF  .~.~.~.~.~> Nitrogen in alcohol moiety

DEFINITION

Classification: 560/57

Plural rings bonded directly to the same carbon in acid moiety:

(under subclass 55) Compounds wherein the acid radical contains two carbocyclic nuclei attached to a methylene group.

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