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DIFF Subgroup
B01F 25/421

by moving the components in a convoluted or labyrinthine path (B01F25/433 takes precedence)

Introduced: January 2022

Title

Titles differ between systems:

IPC: by moving the components in a convoluted or labyrinthine path

CPC: by moving the components in a convoluted or labyrinthine path (B01F25/433 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Flow mixers; Mixers for falling materials, e.g. solid particles > Static mixers > in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions > by moving the components in a convoluted or labyrinthine path

CPC:

Flow mixers; Mixers for falling materials, e.g. solid particles (centrifugal mixers B04) > Static mixers (colloid-mills B02C; mixing valves F16K11/00) > in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions > by moving the components in a convoluted or labyrinthine path (B01F25/433 takes precedence)

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2022.

Child Classifications

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  • B01F 25/422 between stacked plates, e.g. grooved or perforated plates 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