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CPC Subgroup
G01F 1/708

Measuring the time taken to traverse a fixed distance

Full Title

Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow (measuring a proportion of the volume flow G01F5/00) > using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter (G01F1/76, G01F25/00 take precedence) > Measuring the time taken to traverse a fixed distance

6 direct subcodes

Child Classifications

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  • G01F 1/7082 using acoustic detecting arrangements
  • G01F 1/7084 using thermal detecting arrangements
  • G01F 1/7086 using optical detecting arrangements
  • G01F 1/7088 using electrically charged particles as tracers
  • G01F 1/712 using auto-correlation or cross-correlation detection means
  • G01F 1/716 using electron paramagnetic resonance [EPR] or nuclear magnetic resonance [NMR]

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