IPC Main Group
H02P 8/00 Arrangements for controlling dynamo-electric motors rotating step by step
Introduced: July 1974
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
Filing statistics
IPC H02P 8/00 belongs to the parent subclass H02P, which recorded 122,940 patent applications worldwide between 2013 and 2023. Annual filings grew from 9,364 in 2013 to 11,656 in 2023 (+24%), peaking at 12,542 applications in 2020. The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (54,496 applications), MITSUBISHI ELECTRIC CORPORATION (10,495 applications) and TOYOTA MOTOR CORPORATION (9,464 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
control of dynamo-electric motors rotating STEP-BY-STEP
11 direct subcodes
Child Classifications
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- H02P 8/02 specially adapted for single-phase or bi-pole stepper motors, e.g. watch-motors, clock-motors
- H02P 8/04 Arrangements for starting
- H02P 8/12 Control or stabilisation of current
- H02P 8/14 Arrangements for controlling speed or speed and torque
- H02P 8/22 Control of step size; Intermediate stepping, e.g. microstepping
- H02P 8/24 Arrangements for stopping
- H02P 8/32 Reducing overshoot or oscillation, e.g. damping
- H02P 8/34 Monitoring operation
- H02P 8/36 Protection against faults, e.g. against overheating or step-out; Indicating faults
- H02P 8/4 Special adaptations for controlling two or more stepping motors
- H02P 8/42 characterised by non-stepper motors being operated step by step
Top Applicants
Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094