G01M 3/32 for containers, e.g. radiators
Full Title
Investigating fluid-tightness of structures > by using fluid or vacuum > by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors > for containers, e.g. radiators
Filing statistics
CPC G01M 3/32 belongs to the parent subclass G01M, which recorded 184,975 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,503 in 2013 to 23,727 in 2023 (+216%). 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
6 direct subcodes
Child Classifications
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- G01M 3/34 by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines
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