B01F 27/11 characterised by the configuration of the stirrers
Full Title
Mixers with rotary stirring devices in fixed receptacles (magnetic mixers B01F33/45); Kneaders > Stirrers > characterised by the configuration of the stirrers
Filing statistics
CPC B01F 27/11 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
13 direct subcodes
Child Classifications
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- B01F 27/111 Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
- B01F 27/112 with arms, paddles, vanes or blades
- B01F 27/113 Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
- B01F 27/114 Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
- B01F 27/115 comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
- B01F 27/116 Stirrers shaped as cylinders, balls or rollers
- B01F 27/117 Stirrers provided with conical-shaped elements, e.g. funnel-shaped
- B01F 27/118 Stirrers in the form of brushes, sieves, grids, chains or springs
- B01F 27/119 Stirrers with rigid wires or flexible rods
- B01F 27/13 Openwork frame or cage stirrers not provided for in other groups of this subclass
- B01F 27/15 Stirrers with tubes for guiding the material
- B01F 27/17 Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
- B01F 27/19 Stirrers with two or more mixing elements mounted in sequence on the same 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