DIFF Subgroup
B21J 15/10 Riveting machines (electric heating elements H05B)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Riveting machines
CPC: Riveting machines (electric heating elements H05B)
Full Title
Full titles differ between systems:
IPC:
Riveting > Riveting machines
CPC:
Riveting > Riveting machines (electric heating elements H05B)
Of 7 combined children, 6 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- B21J 15/12 with tools or tool parts having a movement additional to the feed movement, e.g. spin IPC+CPC Available in IPC and CPC
- B21J 15/14 specially adapted for riveting specific articles, e.g. brake lining machines +3 CPC IPC+CPC Available in IPC and CPC
- B21J 15/16 Drives for riveting machines; Transmission means therefor IPC+CPC Available in IPC and CPC
- B21J 15/28 Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups +1 CPC IPC+CPC Available in IPC and CPC
- B21J 15/30 Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters IPC+CPC Available in IPC and CPC
- B21J 15/36 Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B21,2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL 2,318
- JFE STEEL JP 2,294
- POSCO (POHANG IRON AND STEEL COMPANY) KR 2,083
- NIPPON STEEL CORPORATION JP 1,650
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 1,631
- SMS GROUP DE 1,472
- BAOSHAN IRON & STEEL COMPANY 1,181
- SGCC(STATE GRID CORPORATION OF CHINA) 1,079
- ANHUI JIANGHUAI AUTOMOBILE 984
- HYUNDAI STEEL COMPANY KR 980
Top Applicants (CPC)
Class B21,2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL JP 2,667
- NIPPON STEEL CORPORATION JP 2,049
- POSCO (POHANG IRON AND STEEL COMPANY) KR 1,967
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 1,800
- SMS GROUP DE 1,538
- JFE STEEL 1,150
- ARCELORMITTAL LU 1,142
- BAOSHAN IRON & STEEL COMPANY 821
- HYUNDAI STEEL COMPANY KR 808
- THYSSENKRUPP STEEL EUROPE DE 660