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IPC Subgroup
G01F 23/4

using bands or wires as transmission elements

Introduced: January 1985

Last revised: January 2006

Full Title

Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm > by floats > using bands or wires as transmission elements

Classification Context

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

3 direct subcodes

Child Classifications

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  • G01F 23/42 using mechanically actuated indicating means
  • G01F 23/44 using electrically actuated indicating means
  • G01F 23/46 using magnetically actuated indicating means

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