US PATENT SUBCLASS 560 / 52
.~.~.~.~ Plural rings bonded directly to the same carbonyl 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}
51  DF  .~.~.~ Aldehyde or ketone group in acid moiety {3}
52.~.~.~.~ Plural rings bonded directly to the same carbonyl in acid moiety


DEFINITION

Classification: 560/52

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

(under subclass 51) Compounds wherein the acid radical contains two carbocyclic nuclei directly attached to a carbonyl group.

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