CPC Main Group Additional Only
C07C 2521/00 Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
7 direct subcodes
Child Classifications
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- C07C 2521/02 Boron or aluminium; Oxides or hydroxides thereof
- C07C 2521/06 Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- C07C 2521/10 Magnesium; Oxides or hydroxides thereof
- C07C 2521/12 Silica and alumina
- C07C 2521/14 Silica and magnesia
- C07C 2521/16 Clays or other mineral silicates
- C07C 2521/18 Carbon
Top Applicants
Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT
- ROCHE CH 12,683
- NOVARTIS CH 10,775
- CHINESE ACADEMY OF SCIENCES 10,619
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,511
- REGENERON PHARMACEUTICALS US 8,426
- BRISTOL-MYERS SQUIBB COMPANY US 7,979
- LG CHEM KR 7,978
- HARVARD UNIVERSITY US 7,706
- UNIVERSITY OF CALIFORNIA US 7,455
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,219