G08C 19/48 being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip
Introduced: September 1968
Title
Titles differ between systems:
IPC: being of the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip
CPC: being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip
Full Title
Full titles differ between systems:
Electric signal transmission systems > using dynamo-electric devices > of which both rotor and stator carry windings > being of the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip
Electric signal transmission systems (G08C17/00 takes precedence) > using dynamo-electric devices (operated by pulses G08C19/20) > of which both rotor and stator carry windings (having squirrel-cage rotor G08C19/40) > being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip
No child classifications to compare. This is a leaf node in both IPC and CPC.
Top Applicants
Top Applicants (IPC)
Class G08,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 6,781
- SGCC(STATE GRID CORPORATION OF CHINA) 5,954
- ROBERT BOSCH DE 3,656
- DENSO CORPORATION 3,452
- HONDA MOTOR COMPANY 2,945
- DENSO CORPORATION JP 2,562
- HONEYWELL INTERNATIONAL US 2,517
- TOYOTA MOTOR CORPORATION JP 2,435
- FORD GLOBAL TECHNOLOGIES US 2,239
- PANASONIC INTELLECTUAL PROPERTY 2,119
Top Applicants (CPC)
Class G08,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 3,999
- TOYOTA MOTOR CORPORATION 3,488
- TOYOTA MOTOR CORPORATION JP 3,377
- FORD GLOBAL TECHNOLOGIES US 3,103
- DENSO CORPORATION JP 2,964
- HONEYWELL INTERNATIONAL US 2,873
- HYUNDAI MOTOR COMPANY KR 2,343
- NISSAN MOTOR COMPANY JP 2,265
- SGCC(STATE GRID CORPORATION OF CHINA) 2,247
- SAMSUNG ELECTRONICS COMPANY KR 2,132