DIFF Subgroup
H02J 3/38 Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
Introduced: September 1968
Full Title
Circuit arrangements for AC mains or AC distribution networks > Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
Of 4 combined children, 3 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open
- H02J 3/388 Arrangements for the handling of islanding, e.g. for disconnection or for avoiding the disconnection of power since 2026 IPC+CPC Available in IPC and CPC
- H02J 3/40 Synchronisation of generators for connection to a network or to another generator IPC+CPC Available in IPC and CPC
- H02J 3/46 Controlling the sharing of generated power between the generators, sources or networks IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H02,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094
Top Applicants (CPC)
Class H02,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 24,515
- MITSUBISHI ELECTRIC CORPORATION JP 11,346
- SIEMENS DE 9,026
- ROBERT BOSCH DE 9,005
- SAMSUNG ELECTRONICS COMPANY KR 6,729
- GUANGDONG POWER GRID CORPORATION 5,740
- DENSO CORPORATION JP 5,077
- LG ELECTRONICS KR 5,041
- LG INNOTEK COMPANY KR 4,442
- TOYOTA MOTOR CORPORATION 4,349