Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Phosphorus; Compounds thereof

CPC: Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16)

Full titles differ between systems:

IPC:

Phosphorus; Compounds thereof

CPC:

Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16)

Of 10 combined children, 9 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

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C01B 25/003 +1 CPC CPC only CPC only
C01B 25/01 Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds since 1974 IPC+CPC Available in IPC and CPC
C01B 25/02 Preparation of phosphorus IPC+CPC Available in IPC and CPC
C01B 25/04 Purification of phosphorus IPC+CPC Available in IPC and CPC
C01B 25/06 Hydrogen phosphides IPC+CPC Available in IPC and CPC
C01B 25/08 Other phosphides +3 CPC IPC+CPC Available in IPC and CPC
C01B 25/10 Halides or oxyhalides of phosphorus IPC+CPC Available in IPC and CPC
C01B 25/12 Oxides of phosphorus IPC+CPC Available in IPC and CPC
C01B 25/14 Sulfur, selenium, or tellurium compounds of phosphorus IPC+CPC Available in IPC and CPC
C01B 25/16 Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C01B15/00) +1 CPC IPC+CPC Available in IPC and CPC

Class C01,2013–2023, worldwide · Source: EPO PATSTAT

Class C01,2013–2023, worldwide · Source: EPO PATSTAT

CHINESE ACADEMY OF SCIENCES 4,293
LG CHEM KR 3,317
BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,219
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,154
OMYA INTERNATIONAL CH 1,524
PANASONIC INTELLECTUAL PROPERTY JP 1,362
SAUDI ARABIAN OIL COMPANY SA 1,298
SUMITOMO METAL MINING COMPANY JP 1,286
CENTRAL SOUTH UNIVERSITY 1,243
L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,238