Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
F28C 1/00

Direct-contact trickle coolers, e.g. cooling towers (building construction E04H5/12; enclosed spaces cooled by trickle F25; components parts of trickle coolers F28F25/00; )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Direct-contact trickle coolers, e.g. cooling towers

CPC: Direct-contact trickle coolers, e.g. cooling towers (building construction E04H5/12; enclosed spaces cooled by trickle F25; components parts of trickle coolers F28F25/00; )

Full Title

Full titles differ between systems:

IPC:

Direct-contact trickle coolers, e.g. cooling towers

CPC:

Direct-contact trickle coolers, e.g. cooling towers (building construction E04H5/12; enclosed spaces cooled by trickle F25; components parts of trickle coolers F28F25/00; )

Of 10 combined children, 8 exist in both systems.

2 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

  • F28C 1/003 CPC only CPC only
  • F28C 1/02 with counter-current only IPC+CPC Available in IPC and CPC
  • F28C 1/04 with cross-current only IPC+CPC Available in IPC and CPC
  • F28C 1/06 with both counter-current and cross-current IPC+CPC Available in IPC and CPC
  • F28C 1/08 Arrangements for recovering heat from exhaust steam IPC+CPC Available in IPC and CPC
  • F28C 1/10 Arrangements for suppressing noise IPC+CPC Available in IPC and CPC
  • F28C 1/12 Arrangements for preventing clogging by frost since 1980 IPC+CPC Available in IPC and CPC
  • F28C 1/16 Arrangements for preventing condensation, precipitation or mist formation, outside the cooler (F28C1/14 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
  • F28C 2001/006 2nd only CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class F28,2013–2023, worldwide · Source: EPO PATSTAT

  1. VALEO SYSTEMES THERMIQUES FR 1,902
  2. MITSUBISHI ELECTRIC CORPORATION JP 1,327
  3. GREE ELECTRIC APPLIANCES 1,152
  4. MAHLE INTERNATIONAL DE 999
  5. ALFA LAVAL SE 960
  6. HANON SYSTEMS KR 917
  7. DENSO CORPORATION 905
  8. DENSO CORPORATION JP 802
  9. CHINESE ACADEMY OF SCIENCES 787
  10. XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 762

Top Applicants (CPC)

Class F28,2013–2023, worldwide · Source: EPO PATSTAT

  1. VALEO SYSTEMES THERMIQUES FR 1,945
  2. MITSUBISHI ELECTRIC CORPORATION JP 1,518
  3. MAHLE INTERNATIONAL DE 1,120
  4. ALFA LAVAL SE 1,085
  5. HANON SYSTEMS KR 939
  6. DENSO CORPORATION JP 900
  7. LG ELECTRONICS KR 861
  8. HAMILTON SUNDSTRAND US 795
  9. DAIKIN INDUSTRIES JP 608
  10. DENSO CORPORATION 537