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DIFF Subgroup
F02B 25/14

using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke

Introduced: September 1968

Title

Titles differ between systems:

IPC: using reverse-flow scavenging, e.g. with both inlet and outlet ports arranged near bottom of piston stroke

CPC: using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke

Full Title

Full titles differ between systems:

IPC:

Engines characterised by using fresh charge for scavenging cylinders > using reverse-flow scavenging, e.g. with both inlet and outlet ports arranged near bottom of piston stroke

CPC:

Engines characterised by using fresh charge for scavenging cylinders > using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • F02B 25/145 CPC only CPC only
  • F02B 25/16 the charge flowing upward essentially along cylinder wall opposite the inlet ports IPC+CPC Available in IPC and CPC
  • F02B 25/18 the charge flowing upward essentially along cylinder wall adjacent the inlet ports, e.g. by means of deflection rib on piston IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class F02,2013–2023, worldwide · Source: EPO PATSTAT

  1. TOYOTA MOTOR CORPORATION 8,687
  2. ROBERT BOSCH DE 8,328
  3. FORD GLOBAL TECHNOLOGIES US 7,423
  4. GE (GENERAL ELECTRIC COMPANY) US 5,732
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 5,592
  6. HYUNDAI MOTOR COMPANY KR 4,699
  7. TOYOTA MOTOR CORPORATION JP 4,541
  8. DENSO CORPORATION 3,711
  9. WEICHAI POWER COMPANY 3,486
  10. SAFRAN AIRCRAFT ENGINES FR 3,249

Top Applicants (CPC)

Class F02,2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 8,801
  2. FORD GLOBAL TECHNOLOGIES US 8,171
  3. GE (GENERAL ELECTRIC COMPANY) US 6,957
  4. HYUNDAI MOTOR COMPANY KR 5,390
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 5,250
  6. TOYOTA MOTOR CORPORATION JP 5,214
  7. TOYOTA MOTOR CORPORATION 4,149
  8. DENSO CORPORATION JP 3,400
  9. KIA MOTORS CORPORATION KR 3,388
  10. SAFRAN AIRCRAFT ENGINES FR 3,332