C01B 13/14 Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups of subclasses C01B - C01G or C25B, according to the element combined with the oxygen or hydroxy group)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Methods for preparing oxides or hydroxides in general
CPC: Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups of subclasses C01B - C01G or C25B, according to the element combined with the oxygen or hydroxy group)
Full Title
Full titles differ between systems:
Oxygen; Ozone; Oxides or hydroxides in general > Methods for preparing oxides or hydroxides in general
Oxygen; Ozone; Oxides or hydroxides in general > Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups of subclasses C01B - C01G or C25B, according to the element combined with the oxygen or hydroxy group)
Of 7 combined children, 6 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
Navigate with arrow keys, Enter to open
- C01B 13/18 by thermal decomposition of compounds, e.g. of salts or hydroxides since 1980 +1 CPC IPC+CPC Available in IPC and CPC
- C01B 13/20 by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state since 1980 IPC+CPC Available in IPC and CPC
- C01B 13/32 by oxidation or hydrolysis of elements or compounds in the liquid or solid state since 1980 +3 CPC IPC+CPC Available in IPC and CPC
- C01B 13/34 by oxidation or hydrolysis of sprayed or atomised solutions since 1980 IPC+CPC Available in IPC and CPC
- C01B 13/36 by precipitation reactions in solutions since 1980 +2 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C01,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 5,794
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 3,286
- LG CHEM KR 2,689
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,669
- CENTRAL SOUTH UNIVERSITY 1,531
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 1,252
- SUMITOMO METAL MINING COMPANY JP 1,073
- ZHEJIANG UNIVERSITY 1,061
- PANASONIC INTELLECTUAL PROPERTY JP 1,058
- PANASONIC INTELLECTUAL PROPERTY 1,038
Top Applicants (CPC)
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