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DIFF Subgroup
B04C 5/13

formed as a vortex finder and extending into the vortex chamber ; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

Introduced: September 1968

Title

Titles differ between systems:

IPC: formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

CPC: formed as a vortex finder and extending into the vortex chamber ; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

Full Title

Full titles differ between systems:

IPC:

Apparatus in which the axial direction of the vortex is reversed > Construction of the overflow ducting, e.g. diffusing or spiral exits > formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

CPC:

Apparatus in which the axial direction of the vortex is reversed > Construction of the overflow ducting, e.g. diffusing or spiral exits > formed as a vortex finder and extending into the vortex chamber ; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

Child Classifications

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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