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DIFF Main Group
B01F 31/00

Mixers with shaking, oscillating, or vibrating mechanisms

Introduced: January 2022

Of 16 combined children, 13 exist in both systems.

3 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2022.

Child Classifications

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  • B01F 31/10 with a mixing receptacle rotating alternately in opposite directions since 2022 IPC+CPC Available in IPC and CPC
  • B01F 31/29 Mixing by periodically deforming flexible tubular members through which the material is flowing since 2022 IPC+CPC Available in IPC and CPC
  • B01F 31/42 with pendulum stirrers, i.e. with stirrers suspended so as to oscillate about fixed points or axes since 2022 IPC+CPC Available in IPC and CPC
  • B01F 31/46 with an annular vibrating trough since 2022 IPC+CPC Available in IPC and CPC
  • B01F 31/50 with a receptacle submitted to a combination of movements, i.e. at least one vibratory or oscillatory movement since 2022 IPC+CPC Available in IPC and CPC
  • B01F 31/55 the materials to be mixed being contained in a flexible bag submitted to periodical deformation since 2022 IPC+CPC Available in IPC and CPC
  • B01F 31/56 CPC only CPC only
  • B01F 31/57 CPC only CPC only
  • B01F 31/60 with a vibrating receptacle (B01F31/10, B01F31/20, B01F31/50 take precedence) since 2022 IPC+CPC Available in IPC and CPC
  • B01F 31/70 CPC only CPC only

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