DIFF Subgroup
F27D 3/16 Introducing a fluid jet or current into the charge (F27D3/18 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Introducing a fluid jet or current into the charge
CPC: Introducing a fluid jet or current into the charge (F27D3/18 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Charging; Discharging; Manipulation of charge > Introducing a fluid jet or current into the charge
CPC:
Charging; Discharging; Manipulation of charge > Introducing a fluid jet or current into the charge (F27D3/18 takes precedence)
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Note: 5 CPC extensions are marked as secondary classification only.
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