DIFF Subgroup
B04B 7/08 Rotary bowls (centrifugal casting machines B22D)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Rotary bowls
CPC: Rotary bowls (centrifugal casting machines B22D)
Full Title
Full titles differ between systems:
IPC:
Elements of centrifuges > Rotary bowls
CPC:
Elements of centrifuges (drives B04B9/00; feeding, charging, or discharging appurtenances or devices B04B11/00) > Rotary bowls (centrifugal casting machines B22D)
Additional Content IPC
Centrifugal casting machines
Of 4 combined children, 3 exist in both systems.
1 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B04B 7/18 formed or coated with sieving or filtering elements (filters in general B01D; sieves in general B07B) IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B04,2013–2023, worldwide · Source: EPO PATSTAT
- ALFA LAVAL SE 541
- GEA MECHANICAL EQUIPMENT DE 297
- CSSC NANJING LUZHOU MACHINE COMPANY 165
- GEA WESTFALIA SEPARATOR GROUP DE 138
- FLOTTWEG SE DE 124
- ANDREAS HETTICH & COMPANY DE 108
- OMACHRON INTELLECTUAL PROPERTY CA 98
- MANN + HUMMEL DE 95
- DYSON GB 87
- JIANGSU SAIDELI PHARMACEUTICAL MACHINE COMPANY 82
Top Applicants (CPC)
Class B04,2013–2023, worldwide · Source: EPO PATSTAT
- ALFA LAVAL SE 576
- GEA MECHANICAL EQUIPMENT DE 304
- DYSON GB 221
- LG ELECTRONICS KR 151
- GEA WESTFALIA SEPARATOR GROUP DE 138
- FLOTTWEG SE DE 129
- FENWAL US 114
- BECTON, DICKINSON & COMPANY US 112
- ANDREAS HETTICH & COMPANY DE 109
- OMACHRON INTELLECTUAL PROPERTY CA 108