US PATENT SUBCLASS 560 / 36
.~.~.~.~ Plural rings bonded directly to the same cyclic carbon in acid moiety

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}
8  DF  .~.~ Aromatic acid moiety {9}
19  DF  .~.~.~ Nitrogen in acid moiety other than as nitroso or isocyanate (e.g., amino acid esters, etc.) {12}
36.~.~.~.~ Plural rings bonded directly to the same cyclic carbon in acid moiety

DEFINITION

Classification: 560/36

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

(under subclass 19) Compounds wherein the acid radical contains two carbocyclic nuclei attached to a methylene or carbonyl group.

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