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PCE
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CPC Subgroup
B30B 1/32

by plungers under fluid pressure

Full Title

Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen > by plungers under fluid pressure

5 direct subcodes

Child Classifications

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  • B30B 1/323
  • B30B 1/326
  • B30B 1/34 involving a plurality of plungers acting on the platen (gas operated B30B1/38)
  • B30B 1/36 having telescoping plungers (gas operated B30B1/38)
  • B30B 1/38 wherein the plungers are operated by pressure of a gas, e.g. steam, air

Top Applicants

Top 10 applicants by patent filingsfor class B30, 2013–2023, worldwide · Source: EPO PATSTAT

  1. HUECK RHEINISCHE DE 192
  2. SIEMPELKAMP MASCHINEN- UND ANLAGENBAU & COMPANY DE 164
  3. FETTE COMPACTING DE 138
  4. PULPAC SE 136
  5. AIDA ENGINEERING JP 136
  6. DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 131
  7. LG ENERGY SOLUTION KR 129
  8. AIDA ENGINEERING 105
  9. KORSCH DE 105
  10. JOHN DEERE US 105