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CPC Subgroup
B01F 27/701

comprising two or more shafts, e.g. in consecutive mixing chambers

Full Title

Mixers with rotary stirring devices in fixed receptacles (magnetic mixers B01F33/45); Kneaders > with stirrers rotating about a horizontal or inclined axis > with paddles, blades or arms > comprising two or more shafts, e.g. in consecutive mixing chambers

5 direct subcodes

Child Classifications

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  • B01F 27/702 with intermeshing paddles
  • B01F 27/703 with stirrers rotating at different speeds
  • B01F 27/704 with stirrers facing each other, i.e. supported by opposite walls of the receptacle
  • B01F 27/705 with stirrers rotating in opposite directions about the same axis, e.g. with a first stirrer surrounded by a tube inside a second stirrer
  • B01F 27/706 with all the shafts in the same receptacle (B01F27/702-B01F27/705 take precedence)

Top Applicants

Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
  2. CHINESE ACADEMY OF SCIENCES 8,352
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
  4. LG CHEM KR 4,290
  5. SAUDI ARABIAN OIL COMPANY SA 3,444
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
  7. DOW GLOBAL TECHNOLOGIES US 3,195
  8. MANN + HUMMEL DE 2,822
  9. JOHNSON MATTHEY GB 2,802
  10. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737