US PATENT SUBCLASS 560 / 139
.~.~.~.~.~ Ortho fused

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
139.~.~.~.~.~ Ortho fused

DEFINITION

Classification: 560/139

Ortho fused:

(under subclass 138) Compounds wherein the carbocyclic groups of the phenolic moiety are joined through two ortho positioned carbon atoms.

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