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DIFF Subgroup
F27B 9/39

Arrangements of devices for discharging

Introduced: January 1985

Title

Titles differ between systems:

IPC: Arrangement of devices for discharging

CPC: Arrangements of devices for discharging

Full Title

Full titles differ between systems:

IPC:

Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity > Details, accessories or equipment specially adapted for furnaces of these types > Arrangement of devices for discharging

CPC:

Furnaces through which the charge is moved mechanically, e.g. of tunnel type (rotary-drum furnaces with means for agitating or moving the charge F27B7/14); Similar furnaces in which the charge moves by gravity > Details, accessories or equipment specially adapted for furnaces of these types > Arrangements of devices for discharging

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class F27,2013–2023, worldwide · Source: EPO PATSTAT

  1. POSCO (POHANG IRON AND STEEL COMPANY) KR 930
  2. JFE STEEL JP 771
  3. PAUL WURTH LU 518
  4. OUTOTEC (FINLAND) FI 436
  5. THYSSEN KRUPP DE 422
  6. REFRACTORY INTELLECTUAL PROPERTY & COMPANY AT 370
  7. THYSSENKRUPP INDUSTRIAL SOLUTIONS DE 341
  8. JFE STEEL 323
  9. PRIMETALS TECHNOLOGIES AUSTRIA AT 310
  10. ZHONGYE CHANGTIAN INTERNATIONAL ENGINEERING COMPANY 299