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IPC Subgroup
G01M 15/04

Testing internal-combustion engines

Introduced: January 2006

Full Title

Testing of engines > Testing internal-combustion engines

Classification Context

Section:
PHYSICS
Class:
MEASURING; TESTING
Subclass:
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR

Filing statistics

IPC G01M 15/04 belongs to the parent subclass G01M, which recorded 339,843 patent applications worldwide between 2013 and 2023. Annual filings grew from 15,255 in 2013 to 47,565 in 2023 (+212%). The most active applicants in class G01 are SGCC(STATE GRID CORPORATION OF CHINA) (41,447 applications), CHINESE ACADEMY OF SCIENCES (32,952 applications) and ROBERT BOSCH (16,470 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

TESTING of internal combustion engines

7 direct subcodes

Child Classifications

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  • G01M 15/05 by combined monitoring of two or more different engine parameters
  • G01M 15/06 by monitoring positions of pistons or cranks
  • G01M 15/08 by monitoring pressure in cylinders
  • G01M 15/09 by monitoring pressure in fluid ducts, e.g. in lubrication or cooling parts
  • G01M 15/1 by monitoring exhaust gases
  • G01M 15/11 by detecting misfire
  • G01M 15/12 by monitoring vibrations

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