DIFF Main Group
F27B 17/00 Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 (structural combinations of furnaces F27B19/02)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Furnaces of a kind not covered by any of groups
CPC: Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 (structural combinations of furnaces F27B19/02)
Full Title
Full titles differ between systems:
IPC:
Furnaces of a kind not covered by any of groups
CPC:
Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 (structural combinations of furnaces F27B19/02)
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
Child Classifications
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Top Applicants
Top Applicants (IPC)
Class F27,2013–2023, worldwide · Source: EPO PATSTAT
- POSCO (POHANG IRON AND STEEL COMPANY) KR 885
- ZHONGYE CHANGTIAN INTERNATIONAL ENGINEERING COMPANY 670
- JFE STEEL 621
- JFE STEEL JP 492
- PAUL WURTH LU 418
- OUTOTEC (FINLAND) FI 346
- CHINA ENFI ENGINEERING CORPORATION 328
- THYSSEN KRUPP DE 310
- JINCHUAN GROUP 279
- NIPPON STEEL CORPORATION 262
Top Applicants (CPC)
Class F27,2013–2023, worldwide · Source: EPO PATSTAT
- POSCO (POHANG IRON AND STEEL COMPANY) KR 930
- JFE STEEL JP 771
- PAUL WURTH LU 518
- OUTOTEC (FINLAND) FI 436
- THYSSEN KRUPP DE 422
- REFRACTORY INTELLECTUAL PROPERTY & COMPANY AT 370
- THYSSENKRUPP INDUSTRIAL SOLUTIONS DE 341
- JFE STEEL 323
- PRIMETALS TECHNOLOGIES AUSTRIA AT 310
- ZHONGYE CHANGTIAN INTERNATIONAL ENGINEERING COMPANY 299