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DIFF Subgroup
B01F 27/80

with stirrers rotating about a substantially vertical axis

Introduced: January 2022

Full Title

Full titles differ between systems:

IPC:

Mixers with rotary stirring devices in fixed receptacles; Kneaders > with stirrers rotating about a substantially vertical axis

CPC:

Mixers with rotary stirring devices in fixed receptacles (magnetic mixers B01F33/45); Kneaders > with stirrers rotating about a substantially vertical axis

IPC and CPC are identically structured here. All 17 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2022.

Child Classifications

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  • B01F 27/808 with stirrers driven from the bottom of the receptacle since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/82 Pan-type mixers, i.e. mixers in which the stirring elements move along the bottom of a pan-shaped receptacle (with stirring elements moving along the wall or bottom of the receptacle B01F27/091) since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/83 the stirrers being additionally moved radially, or oscillating about an axis perpendicular to the stirrer axis since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/84 with two or more stirrers rotating at different speeds or in opposite directions about the same axis since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/87 the receptacle being divided into superimposed compartments since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/88 with a separate receptacle-stirrer unit that is adapted to be coupled to a drive mechanism since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/93 with rotary discs since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/96 with openwork frames or cages since 2022 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 16,893
  2. CHINESE ACADEMY OF SCIENCES 11,733
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 3,898
  4. LG CHEM KR 3,367
  5. PETROCHINA COMPANY 3,224
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,042
  7. ZHEJIANG UNIVERSITY 2,890
  8. MANN + HUMMEL DE 2,740
  9. JOHNSON MATTHEY GB 2,534
  10. SAUDI ARABIAN OIL COMPANY SA 2,527

Top Applicants (CPC)

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