responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)

Introduced: September 1968

Title

Titles differ between systems:

IPC: responsive to excess voltage

CPC: responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)

Full Title

Full titles differ between systems:

IPC:

Emergency protective circuit arrangements for limiting excess current or voltage without disconnection > responsive to excess voltage

CPC:

Emergency protective circuit arrangements for limiting excess current or voltage without disconnection > responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)

CPC subdivides this area 8x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

Child Classifications

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H02H 9/041 CPC only CPC only
H02H 9/042 CPC only CPC only
H02H 9/043 CPC only CPC only
H02H 9/044 CPC only CPC only
H02H 9/045 +2 CPC CPC only CPC only
H02H 9/048 CPC only CPC only
H02H 9/049 CPC only CPC only
H02H 9/06 using spark-gap arresters 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