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Patent applications and USPTO patent grants for Qi; Yamei.The latest application filed is for "broad-pole type square-wave three-phase brushless permanent magnet direct current motor and assembling method thereof".
Patent | Date |
---|---|
Broad-pole type square-wave three-phase brushless permanent magnet direct current motor and assembling method thereof Grant 8,975,799 - Qi , et al. March 10, 2 | 2015-03-10 |
Broad-Pole Type Square-Wave Three-Phase Brushless Permanent Magnet Direct Current Motor and Assembling Method Thereof App 20130106254 - Qi; Yamei ;   et al. | 2013-05-02 |
Brushless DC motor control system Grant 8,183,803 - Li , et al. May 22, 2 | 2012-05-22 |
Hall rotary transformer and hall rotation angle encoder made of it Grant 8,179,126 - Li , et al. May 15, 2 | 2012-05-15 |
Three-phase square-wave permanent magnet brushless DC motor Grant 8,089,192 - Li , et al. January 3, 2 | 2012-01-03 |
Hall Rotary Transformer and Hall Rotation Angle Encoder Made of It App 20110267041 - Li; Tiecai ;   et al. | 2011-11-03 |
Brushless Dc Motor Control System App 20100270957 - Li; Tiecai ;   et al. | 2010-10-28 |
Three-Phase Square-Wave Permanent Magnet Brushless DC Motor App 20090108699 - Li; Tiecai ;   et al. | 2009-04-30 |
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