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CPC Main Group
B04B 15/00

Other accessories for centrifuges

Filing statistics

CPC B04B 15/00 belongs to the parent subclass B04B, which recorded 12,669 patent applications worldwide between 2013 and 2023. Annual filings grew from 851 in 2013 to 1,158 in 2023 (+36%), peaking at 1,364 applications in 2018. The most active applicants in class B04 are ALFA LAVAL (576 applications), GEA MECHANICAL EQUIPMENT (304 applications) and DYSON (221 applications).

Source: EPO PATSTAT, worldwide filings

6 direct subcodes

Child Classifications

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  • B04B 15/02 for cooling, heating, or heat insulating
  • B04B 15/04 for suppressing the formation of foam
  • B04B 15/06 for cleaning bowls, filters, sieves, inserts, or the like
  • B04B 15/08 for ventilating or producing a vacuum in the centrifuge
  • B04B 15/10 for forming a filtering layer in the rotary bowl
  • B04B 15/12 for drying or washing the separated solid particles

Top Applicants

Top 10 applicants by patent filingsfor 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