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DIFF Subgroup
B01F 27/114

Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections

Introduced: January 2022

Full Title

Full titles differ between systems:

IPC:

Mixers with rotary stirring devices in fixed receptacles; Kneaders > Stirrers > characterised by the configuration of the stirrers > Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections

CPC:

Mixers with rotary stirring devices in fixed receptacles (magnetic mixers B01F33/45); Kneaders > Stirrers > characterised by the configuration of the stirrers > Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2022.

Child Classifications

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  • B01F 27/1141 CPC only CPC only
  • B01F 27/1142 of the corkscrew type since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/1143 screw-shaped, e.g. worms since 2022 IPC+CPC Available in IPC and CPC
  • B01F 27/1144 with a plurality of blades following a helical path on a shaft or a blade support 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