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PCE
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Search for IPC and CPC classification codes or keywords
CPC Subgroup
F28C 3/14

the particulate material moving by gravity, e.g. down a tube

Full Title

Other direct-contact heat-exchange apparatus > one heat-exchange medium at least being a fluent solid, e.g. a particulate material > the heat-exchange medium being a particulate material and a gas, vapour, or liquid > the particulate material moving by gravity, e.g. down a tube

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