Patents-Review.com
ClassID:

84623 ⎘

C01B17/905 - CPC Classification

Classification description:

Sulfur; Compounds thereof; Sulfur trioxide; Sulfuric acid; Separation; Purification Removal of organic impurities

Recent Application in this class:
#1
20230406704
2023-12-21

PROCESS FOR CONCENTRATING DILUTED SULFURIC ACID

 #2
20200361771
2020-11-19

Acid recovery from acid-rich solutions

 #3
20200223778
2020-07-16

Reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid

 #4
20190225492
2019-07-25

Acid recovery from acid-rich solutions

 #5
20180086863
2018-03-29

Sulfonation process

 #6
20180079645
2018-03-22

Treating sulfuric acid

 #7
20170355602
2017-12-14

Acid recovery from acid-rich solutions

 #8
20160312317
2016-10-27

Method for recovering an acid from acid/sugar solutions

 #9
20150165430
2015-06-18

Regeneration of acidic ionic liquid catalysts

 #10
20100248940
2010-09-30

Regeneration of acidic catalysts

 #11
20100084315
2010-04-08

PROCESS FOR TREATING ELEMENTAL SULPHUR FOR SMELL IMPROVEMENT

 #12
20080293979
2008-11-27

Process for the regeneration of sulfuric acid

 #13
20080025911
2008-01-31

Recovery of sulphuric acid

 #14
20070272614
2007-11-29

Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes

 #15
20070272613
2007-11-29

Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes

 #16
20070142213
2007-06-21

Regeneration of acidic catalysts

 #17
20060280674
2006-12-14

Method for decoloring sulfuric acid

 #18
20060251570
2006-11-09

Process for regenerating spent sulfuric acid

 #19
20050173345
2005-08-11

Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes