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IPC Subgroup
G01R 13/22

Circuits therefor

Introduced: September 1968

Last revised: January 2006

Full Title

Arrangements for displaying electric variables or waveforms > Cathode-ray oscilloscopes > Circuits therefor

Classification Context

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

Related Keywords

DEFLECTION -circuits for oscilloscopes

6 direct subcodes

Child Classifications

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  • G01R 13/24 Time-base deflection circuits
  • G01R 13/26 Circuits for controlling the intensity of the electron beam
  • G01R 13/28 Circuits for simultaneous or sequential presentation of more than one variable
  • G01R 13/3 Circuits for inserting reference markers, e.g. for timing, for calibrating, for frequency marking
  • G01R 13/32 Circuits for displaying non-recurrent functions such as transients; Circuits for triggering; Circuits for synchronisation; Circuits for time-base expansion
  • G01R 13/34 Circuits for representing a single waveform by sampling, e.g. for very high frequencies

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