IPC Main Group
G01R 31/00 Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
Filing statistics
IPC G01R 31/00 belongs to the parent subclass G01R, which recorded 598,083 patent applications worldwide between 2013 and 2023. Annual filings grew from 34,721 in 2013 to 76,517 in 2023 (+120%). The most active applicants in class G01 are SGCC(STATE GRID CORPORATION OF CHINA) (41,447 applications), CHINESE ACADEMY OF SCIENCES (32,952 applications) and ROBERT BOSCH (16,470 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
testing electric COILStesting electric lines for DISCONTINUITIESdetecting FAULTS in electric equipmentLOCATING electric faultsTESTING electric properties
12 direct subcodes
Child Classifications
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- G01R 31/01 Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
- G01R 31/08 Locating faults in cables, transmission lines, or networks
- G01R 31/12 Testing dielectric strength or breakdown voltage
- G01R 31/24 Testing of discharge tubes
- G01R 31/26 Testing of individual semiconductor devices
- G01R 31/28 Testing of electronic circuits, e.g. by signal tracer
- G01R 31/327 Testing of circuit interrupters, switches or circuit-breakers
- G01R 31/34 Testing dynamo-electric machines
- G01R 31/36 Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R 31/4 Testing power supplies
- G01R 31/44 Testing lamps
- G01R 31/5 Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Top Applicants
Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 41,447
- CHINESE ACADEMY OF SCIENCES 32,952
- ROBERT BOSCH DE 16,470
- SAMSUNG ELECTRONICS COMPANY KR 10,052
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
- ZHEJIANG UNIVERSITY 9,529
- GUANGDONG POWER GRID CORPORATION 8,615
- TSINGHUA UNIVERSITY 7,805
- HALLIBURTON ENERGY SERVICES GROUP US 7,796
- QUALCOMM US 7,171