CPC Main Group
H02P 8/00 Arrangements for controlling dynamo-electric motors rotating step by step
Filing statistics
CPC H02P 8/00 belongs to the parent subclass H02P, which recorded 107,088 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,554 in 2013 to 9,861 in 2023 (+50%), peaking at 11,737 applications in 2018. The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (24,515 applications), MITSUBISHI ELECTRIC CORPORATION (11,346 applications) and SIEMENS (9,026 applications).
Source: EPO PATSTAT, worldwide filings
12 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 (H02P8/12, H02P8/22 take precedence)
- H02P 8/22 Control of step size; Intermediate stepping, e.g. microstepping
- H02P 8/24 Arrangements for stopping (H02P8/32 takes precedence)
- H02P 8/32 Reducing overshoot or oscillation, e.g. damping
- H02P 8/34 Monitoring operation (H02P8/36 takes precedence)
- H02P 8/36 Protection against faults, e.g. against overheating or step-out; Indicating faults
- H02P 8/40 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) 24,515
- MITSUBISHI ELECTRIC CORPORATION JP 11,346
- SIEMENS DE 9,026
- ROBERT BOSCH DE 9,005
- SAMSUNG ELECTRONICS COMPANY KR 6,729
- GUANGDONG POWER GRID CORPORATION 5,740
- DENSO CORPORATION JP 5,077
- LG ELECTRONICS KR 5,041
- LG INNOTEK COMPANY KR 4,442
- TOYOTA MOTOR CORPORATION 4,349