US PATENT SUBCLASS 560 / 80
.~.~.~.~ Ortho fused rings 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}
76  DF  .~.~.~ Polycarboxylic acid {11}
80.~.~.~.~ Ortho fused rings in acid moiety

DEFINITION

Classification: 560/80

Ortho fused rings in acid moiety:

(under subclass 76) Compounds wherein the acid radical contains two or more carbocyclic nuclei joined through ortho positioned nuclear carbons.

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