US PATENT SUBCLASS 560 / 140
.~.~.~.~.~ Plural rings bonded directly to the same carbon in phenolic 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}
129  DF  .~.~ Acyclic acid moiety {9}
130  DF  .~.~.~ Esterified phenolic hydroxy {8}
138  DF  .~.~.~.~ Plural rings in phenolic moiety {3}
140.~.~.~.~.~ Plural rings bonded directly to the same carbon in phenolic moiety

DEFINITION

Classification: 560/140

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

(under subclass 138) Compounds wherein the phenolic moiety contains two carbocyclic groups attached to a methylene or carbonyl group.

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