Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00

Filing statistics

CPC G01R 29/00 belongs to the parent subclass G01R, which recorded 383,760 patent applications worldwide between 2013 and 2023. Annual filings grew from 19,870 in 2013 to 47,277 in 2023 (+138%). The most active applicants in class G01 are CHINESE ACADEMY OF SCIENCES (21,460 applications), ROBERT BOSCH (17,801 applications) and SGCC(STATE GRID CORPORATION OF CHINA) (17,347 applications).

Source: EPO PATSTAT, worldwide filings

11 direct subcodes

Child Classifications

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G01R 29/02 Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
G01R 29/04 Measuring form factor, i.e. quotient of root-mean-square value and arithmetic mean of instantaneous value; Measuring peak factor, i.e. quotient of maximum value and root-mean-square value
G01R 29/06 Measuring depth of modulation
G01R 29/08 Measuring electromagnetic field characteristics
G01R 29/12 Measuring electrostatic fields
G01R 29/16 Measuring asymmetry of polyphase networks
G01R 29/18 Indicating phase sequence; Indicating synchronism
G01R 29/20 Measuring number of turns; Measuring transformation ratio or coupling factor of windings
G01R 29/22 Measuring piezoelectric properties
G01R 29/24 Arrangements for measuring quantities of charge
G01R 29/26 Measuring noise figure; Measuring signal-to-noise ratio

Top Applicants

Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT

CHINESE ACADEMY OF SCIENCES 21,460
ROBERT BOSCH DE 17,801
SGCC(STATE GRID CORPORATION OF CHINA) 17,347
SAMSUNG ELECTRONICS COMPANY KR 13,192
QUALCOMM US 9,900
HALLIBURTON ENERGY SERVICES GROUP US 9,742
PHILIPS ELECTRONICS NL 7,249
MITSUBISHI ELECTRIC CORPORATION JP 6,503
ZHEJIANG UNIVERSITY 6,414
DENSO CORPORATION JP 6,382