IPC Subgroup
C01F 17/2 Compounds containing only rare earth metals as the metal element
Introduced: January 2020
Full Title
Compounds of rare earth metals > Compounds containing only rare earth metals as the metal element
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 17/2 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
6 direct subcodes
Child Classifications
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- C01F 17/206 oxide or hydroxide being the only anion
- C01F 17/247 Carbonates
- C01F 17/253 Halides
- C01F 17/276 Nitrates
- C01F 17/282 Sulfates
- C01F 17/288 Sulfides
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