C01B25/18 - CPC Classification Index

ClassID:

84813 ⎘

C01B25/18 - CPC Classification

Classification description:

Phosphorus; Compounds thereof; Oxyacids of phosphorus; Salts thereof Phosphoric acid

Sub-classes:

C01B25/185 » {Preparation neither from elemental phosphorus or phosphoric anhydride nor by reacting phosphate-containing material with an acid, e.g. by reacting phosphate-containing material with an ion-exchange resin or an acid salt used alone} 7
C01B25/20 » Preparation from elemental phosphorus or phosphoric anhydride 10
C01B25/22 » Preparation by reacting phosphate-containing material with an acid, e.g. wet process 18
C01B25/234 » Purification; Stabilisation; Concentration 20

Recent Application in this class:

20250388550

2025-12-25

SALTS OF AN ANTIOXIDANT AND CRYSTALLINE FORMS THEREOF

20250100882

2025-03-27

METHOD FOR PREPARING CREMATION CRYSTALS BY USING CATALYST OBTAINED THROUGH REDUCTION OF PHOSPHORUS IN SKELETAL REMAINS

20250042742

2025-02-06

PROCESS FOR PRODUCING A PHOSPHATE CONTAINING PRODUCT FROM A PHOSPHATE SOURCE

20200377386

2020-12-03

Phospate recovery by acid retardation

20200094209

2020-03-26

Chemical phosphoric acid production unit provided with a phosphogypsum discharge system

20200048092

2020-02-13

PROCESS FOR RECOVERING PHOSPHOROUS FROM PHOSPHORITIC MATERIALS

20170314140

2017-11-02

Method for the Wet Chemical Polishing of Molded Zinc Parts

20170306511

2017-10-26

Crystalline transition metal oxide particles and continuous method of producing the same

20170160181

2017-06-08

Substrate treating method for a substrate treating apparatus that carries out etching treatment of substrates

#10

20170015568

2017-01-19

Phosphate recovery by acid retardation

#11

20160229725

2016-08-11

Modified amines useful as scale inhibitors in wet process phosphoric acid production

#12

20160152473

2016-06-02

Raw material of composite pellets used in kiln phosphoric acid process, and forming method therefor

#13

20150225240

2015-08-13

Membranes, azeotropic and catalytic components

#14

20140234196

2014-08-21

Recovery of phosphorus values and salt impurities from aqueous waste streams

#15

20140127110

2014-05-08

METHOD FOR RECOVERING PHOSPHORUS IN THE FORM OF A COMPOUND CONTAINING PHOSPHORUS, FROM LAMP WASTE CONTAINING LUMINOPHORES

#16

20120171099

2012-07-05

Phosphoric acid production gypsum filtration flocculant pre-dilution (make down) with post-filtration phosphoric acid

#17

20120100051

2012-04-26

Recovery of phosphorus values and salt impurities from aqueous waste streams

#18

20060073088

2006-04-06

High purity phosphoric acid and process of producing the same