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CPC Subgroup
F28B 3/04

by injecting cooling liquid into the steam or vapour (F28B3/08 takes precedence)

Full Title

Condensers in which the steam or vapour comes into direct contact with the cooling medium > by injecting cooling liquid into the steam or vapour (F28B3/08 takes precedence)

Filing statistics

CPC F28B 3/04 belongs to the parent subclass F28B, which recorded 5,264 patent applications worldwide between 2013 and 2023. Annual filings grew from 314 in 2013 to 544 in 2023 (+73%), peaking at 805 applications in 2020. The most active applicants in class F28 are VALEO SYSTEMES THERMIQUES (1,945 applications), MITSUBISHI ELECTRIC CORPORATION (1,518 applications) and MAHLE INTERNATIONAL (1,120 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor 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