IPC Subgroup
C01F 7/02 Aluminium oxide; Aluminium hydroxide; Aluminates
Introduced: September 1968
Last revised: January 2022
Full Title
Compounds of aluminium > Aluminium oxide; Aluminium hydroxide; Aluminates
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
Filing statistics
IPC C01F 7/02 belongs to the parent subclass C01F, which recorded 36,684 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,787 in 2013 to 3,525 in 2023 (+26%), peaking at 3,703 applications in 2017. The most active applicants in class C01 are CHINESE ACADEMY OF SCIENCES (5,794 applications), SINOPEC (CHINA PETROCHEMICAL CORPORATION) (3,286 applications) and LG CHEM (2,689 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
ALUMINAALUMINATES
11 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C01F 7/021 After-treatment of oxides or hydroxides
- C01F 7/028 Beta-aluminas
- C01F 7/04 Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F 7/16 Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom
- C01F 7/2 Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
- C01F 7/3 Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F 7/34 Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
- C01F 7/38 Preparation of aluminium oxide by thermal reduction of aluminous minerals
- C01F 7/42 Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation
- C01F 7/44 Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
- C01F 7/46 Purification of aluminium oxide, aluminium hydroxide or aluminates
Top Applicants
Top 10 applicants by patent filingsfor 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