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CPC Subgroup
G01F 25/17

using calibrated reservoirs

Full Title

Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume > of flowmeters > using calibrated reservoirs

Filing statistics

CPC G01F 25/17 belongs to the parent subclass G01F, which recorded 86,299 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,419 in 2013 to 7,269 in 2023 (+34%), peaking at 9,604 applications in 2020. 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

Top Applicants

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

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