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IPC Main Group
G01F 1/00

Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow

Introduced: September 1968

Last revised: January 2022

Classification Context

Section:
PHYSICS
Class:
MEASURING; TESTING
Subclass:
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME

9 direct subcodes

Child Classifications

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  • G01F 1/002 wherein the flow is in an open channel
  • G01F 1/72 Devices for measuring pulsing fluid flows
  • G01F 1/74 Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid

Top Applicants

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

  1. SGCC(STATE GRID CORPORATION OF CHINA) 41,447
  2. CHINESE ACADEMY OF SCIENCES 32,952
  3. ROBERT BOSCH DE 16,470
  4. SAMSUNG ELECTRONICS COMPANY KR 10,052
  5. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
  6. ZHEJIANG UNIVERSITY 9,529
  7. GUANGDONG POWER GRID CORPORATION 8,615
  8. TSINGHUA UNIVERSITY 7,805
  9. HALLIBURTON ENERGY SERVICES GROUP US 7,796
  10. QUALCOMM US 7,171