B01F 27/113 Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
Introduced: January 2022
Full Title
Mixers with rotary stirring devices in fixed receptacles; Kneaders > Stirrers > characterised by the configuration of the stirrers > Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- Subclass:
- MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
Filing statistics
IPC B01F 27/113 belongs to the parent subclass B01F, which recorded 429,342 patent applications worldwide between 2013 and 2023. Annual filings grew from 10,442 in 2013 to 66,296 in 2023 (+535%), peaking at 69,567 applications in 2020. The most active applicants in class B01 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (16,893 applications), CHINESE ACADEMY OF SCIENCES (11,733 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (3,898 applications).
Source: EPO PATSTAT, worldwide filings
2 direct subcodes
Child Classifications
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- B01F 27/1131 with holes in the propeller blade surface
- B01F 27/1132 with guiding tubes or tubular segments fixed to and surrounding the tips of the propeller blades, e.g. for supplementary mixing
Top Applicants
Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 16,893
- CHINESE ACADEMY OF SCIENCES 11,733
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 3,898
- LG CHEM KR 3,367
- PETROCHINA COMPANY 3,224
- IFPEN (IFP ENERGIES NOUVELLES) FR 3,042
- ZHEJIANG UNIVERSITY 2,890
- MANN + HUMMEL DE 2,740
- JOHNSON MATTHEY GB 2,534
- SAUDI ARABIAN OIL COMPANY SA 2,527