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IPC Subgroup
F27B 7/4

Planetary coolers

Introduced: January 1985

Last revised: January 2006

Full Title

Rotary-drum furnaces, i.e. horizontal or slightly inclined > Details, accessories or equipment specially adapted for rotary-drum furnaces > Arrangements of cooling devices > Planetary coolers

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
FURNACES; KILNS, OVENS OR RETORTS
Subclass:
FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS

Top Applicants

Top 10 applicants by patent filingsfor class F27, 2013–2023, worldwide · Source: EPO PATSTAT

  1. POSCO (POHANG IRON AND STEEL COMPANY) KR 885
  2. ZHONGYE CHANGTIAN INTERNATIONAL ENGINEERING COMPANY 670
  3. JFE STEEL 621
  4. JFE STEEL JP 492
  5. PAUL WURTH LU 418
  6. OUTOTEC (FINLAND) FI 346
  7. CHINA ENFI ENGINEERING CORPORATION 328
  8. THYSSEN KRUPP DE 310
  9. JINCHUAN GROUP 279
  10. NIPPON STEEL CORPORATION 262