IPC Subgroup
C01G 23/047 Titanium dioxide
Introduced: January 1980
Last revised: January 2006
Full Title
Compounds of titanium > Oxides; Hydroxides > Titanium dioxide
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES OR
3 direct subcodes
Child Classifications
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- C01G 23/053 Producing by wet processes, e.g. hydrolysing titanium salts
- C01G 23/07 Producing by vapour phase processes, e.g. halide oxidation
- C01G 23/08 Drying; Calcining
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