C01B17/901 - CPC Classification Index

ClassID:

84619 ⎘

C01B17/901 - CPC Classification

Classification description:

Sulfur; Compounds thereof; Sulfur trioxide; Sulfuric acid; Separation; Purification Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids

Sub-classes:

C01B17/902 » {by dialysis} 5
C01B17/903 » {by liquid-liquid extraction} 2
C01B17/904 » {by ion-exchange} 1

Recent Application in this class:

20190382266

2019-12-19

Method for recovering and purifying waste sulfuric acid solution

20180162731

2018-06-14

System for manufacturing high purity sulfuric acid

20150122744

2015-05-07

Method for purification of spent sulfuric acid from titanium dioxide rutile industry

20140339468

2014-11-20

Method for separating arsenic and heavy metals in an acidic washing solution

20140326593

2014-11-06

Method for manufacturing high purity sulfuric acid

20130302240

2013-11-14

Method for purification of spent sulfuric acid from titanium dioxide rutile industry

20120156497

2012-06-21

Galvanic waste sludge treatment and manufacturing of nano-sized iron oxides

20120137934

2012-06-07

Reducing agent for the soluble chromate content of cement and methods for production thereof

20080056982

2008-03-06

Process for recycling waste acid

#10

20070122336

2007-05-31

Method for processing iron-laden spent sulfuric acid

#11

20070039522

2007-02-22

Reducing agent for the soluble chromate content of cement and methods for the production thereof

#12

20060196761

2006-09-07

Regeneration of cupric etchants and recovery of copper sulfate