DIFF Subgroup
F03C 2/02 of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Rotary-piston engines > of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
CPC:
Rotary-piston engines (in which the liquid exclusively displaces one or more piston reciprocating in rotary cylinders F03C1/24) > of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
No child classifications to compare. This is a leaf node in both IPC and CPC.
Top Applicants
Top Applicants (IPC)
Class F03,2013–2023, worldwide · Source: EPO PATSTAT
- VESTAS DK 3,539
- WOBBEN PROPERTIES DE 2,922
- SIEMENS GAMESA RENEWABLE ENERGY DK 2,747
- GE (GENERAL ELECTRIC COMPANY) US 2,356
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 1,228
- SIEMENS DE 886
- SGCC(STATE GRID CORPORATION OF CHINA) 831
- HUANENG CLEAN ENERGY RESEARCH INSTITUTE 785
- MING YANG SMART ENERGY GROUP. 652
- LM WIND POWER DK 600
Top Applicants (CPC)
Class F03,2013–2023, worldwide · Source: EPO PATSTAT
- VESTAS DK 3,718
- WOBBEN PROPERTIES DE 3,602
- SIEMENS GAMESA RENEWABLE ENERGY DK 3,016
- GE (GENERAL ELECTRIC COMPANY) US 2,594
- SIEMENS DE 1,082
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 709
- LM WIND POWER DK 671
- WOBBEN PROPERTIES 660
- SENVION DE 555
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY CN 536