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IPC Subgroup
H02J 9/04

in which the distribution system is disconnected from the normal source and connected to a standby source

Introduced: September 1968

Last revised: January 2006

Full Title

Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting > in which the distribution system is disconnected from the normal source and connected to a standby source

Classification Context

Section:
ELECTRICITY
Class:
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
Subclass:
ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

1 direct subcode

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 54,496
  2. MITSUBISHI ELECTRIC CORPORATION JP 10,495
  3. TOYOTA MOTOR CORPORATION 9,464
  4. GUANGDONG POWER GRID CORPORATION 9,339
  5. ROBERT BOSCH DE 8,226
  6. SIEMENS DE 8,218
  7. DENSO CORPORATION 7,063
  8. MITSUBISHI ELECTRIC CORPORATION 6,619
  9. SAMSUNG ELECTRONICS COMPANY KR 5,826
  10. GREE ELECTRIC APPLIANCES 5,094