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PCE
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CPC Subgroup
B65G 33/14

comprising a screw or screws enclosed in a tubular housing

Full Title

Screw or rotary spiral conveyors > for fluent solid materials > comprising a screw or screws enclosed in a tubular housing

4 direct subcodes

Child Classifications

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  • B65G 33/16 with flexible screws operating in flexible tubes
  • B65G 33/18 with multiple screws in parallel arrangements
  • B65G 33/20 the housing being rotatable relative to the screw
  • B65G 33/22 with means for retarding material flow at the delivery end of the housing

Top Applicants

Top 10 applicants by patent filingsfor class B65, 2013–2023, worldwide · Source: EPO PATSTAT

  1. P&G (PROCTER & GAMBLE COMPANY) US 3,369
  2. KRONES DE 3,304
  3. TETRA LAVAL HOLDINGS & FINANCE CH 2,227
  4. CANON JP 2,051
  5. AUTOSTORE TECHNOLOGY NO 1,731
  6. GPI (GRAPHIC PACKAGING INTERNATIONAL) US 1,707
  7. CANON 1,693
  8. G.D IT 1,678
  9. MURATA MACHINERY JP 1,664
  10. DAIFUKU COMPANY JP 1,654