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IPC Subgroup
G08C 19/46

of which both rotor and stator carry windings

Introduced: September 1968

Last revised: January 2006

Full Title

Electric signal transmission systems > using dynamo-electric devices > of which both rotor and stator carry windings

Classification Context

Section:
PHYSICS
Class:
SIGNALLING
Subclass:
TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS

1 direct subcode

Child Classifications

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  • G08C 19/48 being of the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip

Top Applicants

Top 10 applicants by patent filingsfor class G08, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TOYOTA MOTOR CORPORATION 6,781
  2. SGCC(STATE GRID CORPORATION OF CHINA) 5,954
  3. ROBERT BOSCH DE 3,656
  4. DENSO CORPORATION 3,452
  5. HONDA MOTOR COMPANY 2,945
  6. DENSO CORPORATION JP 2,562
  7. HONEYWELL INTERNATIONAL US 2,517
  8. TOYOTA MOTOR CORPORATION JP 2,435
  9. FORD GLOBAL TECHNOLOGIES US 2,239
  10. PANASONIC INTELLECTUAL PROPERTY 2,119