C07C63/40 - CPC Classification Index

ClassID:

92031 ⎘

C07C63/40 - CPC Classification

Classification description:

Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings; Polycyclic acids with carboxyl groups bound to condensed ring systems containing two condensed rings containing three or more carboxyl groups all bound to carbon atoms of the condensed ring system

Recent Application in this class:

20160168335

2016-06-16

ALKOXYLATED HUMUS MATERIAL COMPOSITIONS AND METHODS OF MAKING SAME

20120330057

2012-12-27

PROCESS FOR THE EXTRACTION OF HIGH MOLECULAR WEIGHT NAPHTHENIC ACIDS FROM CALCIUM NAPHTHENATE SALTS

20100160680

2010-06-24

Process for the extraction of high molecular weight naphthenic acids from calcium naphthenate salts