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PCE
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DIFF Subgroup
B04C 5/14

Construction of the underflow ducting; Apex constructions; Discharge arrangements

Introduced: September 1968

Full Title

Apparatus in which the axial direction of the vortex is reversed > Construction of the underflow ducting; Apex constructions; Discharge arrangements

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

Child Classifications

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  • B04C 5/15 with swinging flaps or revolving sluices; Sluices; Check-valves IPC+CPC Available in IPC and CPC
  • B04C 5/16 with variable-size outlets from the underflow ducting IPC+CPC Available in IPC and CPC
  • B04C 5/18 with auxiliary fluid assisting discharge IPC+CPC Available in IPC and CPC
  • B04C 5/181 Bulkheads or central bodies in the discharge opening IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B04,2013–2023, worldwide · Source: EPO PATSTAT

  1. ALFA LAVAL SE 541
  2. GEA MECHANICAL EQUIPMENT DE 297
  3. CSSC NANJING LUZHOU MACHINE COMPANY 165
  4. GEA WESTFALIA SEPARATOR GROUP DE 138
  5. FLOTTWEG SE DE 124
  6. ANDREAS HETTICH & COMPANY DE 108
  7. OMACHRON INTELLECTUAL PROPERTY CA 98
  8. MANN + HUMMEL DE 95
  9. DYSON GB 87
  10. JIANGSU SAIDELI PHARMACEUTICAL MACHINE COMPANY 82

Top Applicants (CPC)

Class B04,2013–2023, worldwide · Source: EPO PATSTAT

  1. ALFA LAVAL SE 576
  2. GEA MECHANICAL EQUIPMENT DE 304
  3. DYSON GB 221
  4. LG ELECTRONICS KR 151
  5. GEA WESTFALIA SEPARATOR GROUP DE 138
  6. FLOTTWEG SE DE 129
  7. FENWAL US 114
  8. BECTON, DICKINSON & COMPANY US 112
  9. ANDREAS HETTICH & COMPANY DE 109
  10. OMACHRON INTELLECTUAL PROPERTY CA 108