DIFF Subgroup
F15C 1/20 Direct-impact devices i.e., devices in which two collinear opposing power streams are impacted
Introduced: September 1968
Title
Titles differ between systems:
IPC: Direct-impact devices, i.e. devices in which two collinear opposing power streams are impacted
CPC: Direct-impact devices i.e., devices in which two collinear opposing power streams are impacted
Full Title
Full titles differ between systems:
IPC:
Circuit elements having no moving parts > Direct-impact devices, i.e. devices in which two collinear opposing power streams are impacted
CPC:
Circuit elements having no moving parts > Direct-impact devices i.e., devices in which two collinear opposing power streams are impacted
No child classifications to compare. This is a leaf node in both IPC and CPC.
Top Applicants
Top Applicants (IPC)
Class F15,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 1,079
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 980
- SMC CORPORATION JP 737
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 674
- KYB CORPORATION JP 525
- CATERPILLAR US 461
- FESTO & COMPANY DE 451
- ZHEJIANG UNIVERSITY 448
- HITACHI CONSTRUCTION MACHINERY COMPANY 442
- XUZHOU HEAVY MACHINERY COMPANY 404
Top Applicants (CPC)
Class F15,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 1,281
- SMC CORPORATION JP 865
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 814
- KYB CORPORATION JP 584
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 536
- CATERPILLAR US 532
- FESTO & COMPANY DE 486
- JOHN DEERE US 419
- KAWASAKI HEAVY IND JP 368
- HAMILTON SUNDSTRAND US 368