CPC Main Group
B01F 27/00 Mixers with rotary stirring devices in fixed receptacles (magnetic mixers B01F33/45); Kneaders
Filing statistics
CPC B01F 27/00 belongs to the parent subclass B01F, which recorded 116,023 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,784 in 2013 to 12,676 in 2023 (+119%), peaking at 16,395 applications in 2018. The most active applicants in class B01 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (10,345 applications), CHINESE ACADEMY OF SCIENCES (8,352 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (5,134 applications).
Source: EPO PATSTAT, worldwide filings
10 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B01F 27/05 Stirrers
- B01F 27/21 characterised by their rotating shafts
- B01F 27/23 characterised by the orientation or disposition of the rotor axis
- B01F 27/25 Mixers with both stirrer and drive unit submerged in the material being mixed
- B01F 27/27 Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices (the stirrers having a central axial inflow and a substantially radial outflow B01F27/81)
- B01F 27/40 Mixers with rotor-rotor system, e.g. with intermeshing teeth
- B01F 27/50 Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
- B01F 27/55 with stirrers driven by the moving material
- B01F 27/60 with stirrers rotating about a horizontal or inclined axis
- B01F 27/80 with stirrers rotating about a substantially vertical axis
Top Applicants
Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
- CHINESE ACADEMY OF SCIENCES 8,352
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
- LG CHEM KR 4,290
- SAUDI ARABIAN OIL COMPANY SA 3,444
- IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
- DOW GLOBAL TECHNOLOGIES US 3,195
- MANN + HUMMEL DE 2,822
- JOHNSON MATTHEY GB 2,802
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737