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IPC Subgroup
G01R 31/311

of integrated circuits

Introduced: January 1995

Last revised: January 2006

Full Title

Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere > Testing of electronic circuits, e.g. by signal tracer > Contactless testing > using non-ionising electromagnetic radiation, e.g. optical radiation > of integrated circuits

Classification Context

Section:
PHYSICS
Class:
MEASURING; TESTING
Subclass:
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES

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