IPC Subgroup
C04B 35/01 based on oxides
Introduced: January 1995
Last revised: January 2006
Full Title
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products > based on oxides
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- Subclass:
- LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
15 direct subcodes
Child Classifications
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- C04B 35/03 based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B 35/08 based on beryllium oxide
- C04B 35/1 based on aluminium oxide
- C04B 35/12 based on chromium oxide
- C04B 35/14 based on silica
- C04B 35/16 based on silicates other than clay
- C04B 35/26 based on ferrites
- C04B 35/42 based on chromites
- C04B 35/44 based on aluminates
- C04B 35/447 based on phosphates
- C04B 35/45 based on copper oxide or solid solutions thereof with other oxides
- C04B 35/453 based on zinc, tin or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
- C04B 35/46 based on titanium oxides or titanates
- C04B 35/48 based on zirconium or hafnium oxides or zirconates or hafnates
- C04B 35/495 based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
Top Applicants
Top 10 applicants by patent filingsfor class C04, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 2,095
- WUHAN UNIVERSITY OF TECHNOLOGY 1,205
- NGK INSULATORS JP 1,133
- HALLIBURTON ENERGY SERVICES GROUP US 1,049
- SIKA TECHNOLOGY CH 1,041
- GUILIN UNIVERSITY OF TECHNOLOGY 807
- WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY 806
- SOUTHEAST UNIVERSITY 801
- CORNING US 777
- UNITED STATES GYPSUM COMPANY US 739