G01R 31/28 Testing of electronic circuits, e.g. by signal tracer ( testing for short-circuits, discontinuities, leakage or incorrect line connection G01R31/50; checking computers G06F11/00; checking static stores for correct operation G11C29/00 )
Full Title
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere ( testing line transmission systems H04B3/46; testing or measuring semiconductors or solid state devices during manufacture ) > Testing of electronic circuits, e.g. by signal tracer ( testing for short-circuits, discontinuities, leakage or incorrect line connection G01R31/50; checking computers G06F11/00; checking static stores for correct operation G11C29/00 )
Filing statistics
CPC G01R 31/28 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
9 direct subcodes
Child Classifications
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- G01R 31/30 Marginal testing, e.g. by varying supply voltage (testing computers during standby operation or idle time G06F11/22)
- G01R 31/302 Contactless testing
- G01R 31/316 Testing of analog circuits
- G01R 31/3167 Testing of combined analog and digital circuits
- G01R 31/317 Testing of digital circuits
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