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PCE
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DIFF Subgroup
B01F 25/50

Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

Introduced: January 2022

Full Title

Full titles differ between systems:

IPC:

Flow mixers; Mixers for falling materials, e.g. solid particles > Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

CPC:

Flow mixers; Mixers for falling materials, e.g. solid particles (centrifugal mixers B04) > Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

IPC defines codes here since 2022.

Child Classifications

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  • B01F 25/51 in which the mixture is circulated through a set of tubes, e.g. with gradual introduction of a component into the circulating flow since 2022 IPC+CPC Available in IPC and CPC
  • B01F 25/52 with a rotary stirrer in the recirculation tube since 2022 IPC+CPC Available in IPC and CPC
  • B01F 25/53 in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced since 2022 IPC+CPC Available in IPC and CPC
  • B01F 25/54 provided with a pump inside the receptacle to recirculate the material within the receptacle 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