IPC Main Group
C01F 11/00 Compounds of calcium, strontium, or barium
Introduced: September 1968
Last revised: January 2006
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
Related Keywords
carbonates, halides, hydroxides, nitrates, oxides, sulfates or sulfites of ALKALINE EARTH METALScarbonates, halides, hydroxides, nitrates, oxides, sulfates, sulfites of BARIUMcarbonates, halides, hydroxides, nitrates, oxides, sulfates or sulfites of CALCIUMcarbonates, halides, hydroxides, nitrates, oxides, sulfates, sulfites of STRONTIUM
6 direct subcodes
Child Classifications
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- C01F 11/02 Oxides or hydroxides
- C01F 11/18 Carbonates
- C01F 11/2 Halides
- C01F 11/36 Nitrates
- C01F 11/46 Sulfates
- C01F 11/48 Sulfites
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