C01B25/237 - CPC Classification Index

ClassID:

84835 ⎘

C01B25/237 - CPC Classification

Classification description:

Phosphorus; Compounds thereof; Oxyacids of phosphorus; Salts thereof; Phosphoric acid; Purification; Stabilisation; Concentration Selective elimination of impurities

Sub-classes:

C01B25/2372 » {Anionic impurities, e.g. silica or boron compounds} 0
C01B25/238 » Cationic impurities, {e.g. arsenic compounds} 19

Recent Application in this class:

20250109020

2025-04-03

Method for purification of at least one aqueous solution of phosphoric acid

20230365409

2023-11-16

Method for removing heavy metals in the manufacture of phosphoric acid

20150360143

2015-12-17

Multi-stage crystallisation process and apparatus to purify a compound

20150078965

2015-03-19

Extraction of uranium from wet-process phosphoric acid

20150010446

2015-01-08

Extraction of uranium from wet-process phosphoric acid

20130164197

2013-06-27

Extraction of uranium from wet-process phosphoric acid

20130022520

2013-01-24

Extraction of uranium from wet-process phosphoric acid

20130022519

2013-01-24

Extraction of uranium from wet-process phosphoric acid

20120003140

2012-01-05

Method for improving gypsum/phosphoric acid slurry filtration using carboxymethyl cellulose

#10

20110200509

2011-08-18

Process for the production of high purity phosphoric acid

#11

20100028226

2010-02-04

Extraction of uranium from wet-process phosphoric acid