C07C309/33 - CPC Classification Index

ClassID:

93360 ⎘

C07C309/33 - CPC Classification

Classification description:

Sulfonic acids; Halides, esters, or anhydrides thereof; Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton of six-membered aromatic rings being part of condensed ring systems

Sub-classes:

C07C309/34 » formed by two rings 1
C07C309/38 » formed by at least three rings 14

Recent Application in this class:

20170123314

2017-05-04

Thermal acid generators and photoresist pattern trimming compositions and methods

20160187783

2016-06-30

Photoresist pattern trimming compositions and methods