ClassID:

84831

C01B25/234 - CPC Classification

Classification description:

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

Sub-classes:
Recent Application in this class:
#1
20250382174
2025-12-18

METHOD FOR PRODUCING HIGH-PURITY PHOSPHORIC ACID THROUGH QUANTUM BEHAVIOR CONTROL

#2
20250289717
2025-09-18

Method For Determining Mixing Parameters For The Preparation Of A Phosphoric Acid Solution Comprising A Controlled Content Of One Or More Of Its Constituents

#3
20250236522
2025-07-24

METHOD OF RECOVERING AND REUSING PHOSPHORIC ACID FROM FERMENTATION BROTH OR FERMENTATION WASTE LIQUID

#4
20230373789
2023-11-23

METHOD FOR PRODUCING PHOSPHORIC ACID AND CALCIUM SULPHATE QUALITY SUITABLE FOR A CLINKER PROCESS FOR THE COMMERCIAL AND INDUSTRIAL UTILIZATION OF CALCIUM SULPHATE

#5
20230227311
2023-07-20

PROCESS FOR THE REMOVAL OF HEAVY METALS FROM A PHOSPHORIC ACID CONTAINING COMPOSITION USING A FLOCCULATING AGENT

#6
20200377386
2020-12-03

Phospate recovery by acid retardation

#7
20200046266
2020-02-13

Methods and apparatus for visualising a print on an object

#8
20170081189
2017-03-23

Method for purifying phosphoric acid

#9
20170050848
2017-02-23

Method for purifying raw phosphoric acid (e.g. MGA acid) by adding ashes originating from waste incineration plants, comprising the production of pure phosphoric acid, calcium sulfate, water-soluble calcium hydrogen phosphates and metal salt solution

#10
20170015568
2017-01-19

Phosphate recovery by acid retardation

#11
20160332879
2016-11-17

Method of purifying phosphoric acid

#12
20160076120
2016-03-17

Method for collecting silver ions and phosphoric acid in waste fluid

#13
20150360143
2015-12-17

Multi-stage crystallisation process and apparatus to purify a compound

#14
20150225240
2015-08-13

Membranes, azeotropic and catalytic components

#15
20130287666
2013-10-31

PROCESS FOR THE PURIFICATION OF PHOSPHORIC ACID

#16
20120301389
2012-11-29

METHOD FOR THE SEPARATION OF A NON-VOLATILE STRONG ACID FROM A SALT THEREOF AND COMPOSITIONS PRODUCED THEREBY

#17
20120244058
2012-09-27

Preventing or reducing scale in wet-process phosphoric acid production

#18
20120003140
2012-01-05

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

#19
20110200509
2011-08-18

Process for the production of high purity phosphoric acid

#20
20100170855
2010-07-08

MODIFICATION OF PRECIPITATE MORPHOLOGY AND SETTLING CHARACTERISTICS IN ACID CONDITIONS

#21
20080226529
2008-09-18

Purification of phosphoric acid rich streams

#22
20060171871
2006-08-03

Processes for purifying phosphoric acid and for preparing phosphoric acid

#23
20060073088
2006-04-06

High purity phosphoric acid and process of producing the same

#24
20050287061
2005-12-29

Processes for purifying phosphoric acid and for preparing phosphoric acid