Patent applications and USPTO patent grants for Liu; Pinzhi.The latest application filed is for "system and method for reducing gear lash related torque disturbances".
Patent | Date |
---|---|
System And Method For Reducing Gear Lash Related Torque Disturbances App 20220065346 - Chen; Weitian ;   et al. | 2022-03-03 |
System And Method For Changing To A Low Gear Range Of A Four Wheel Drive Vehicle App 20210172513 - Chen; Weitian ;   et al. | 2021-06-10 |
Forming tools having textured surfaces Grant 9,844,809 - Xia , et al. December 19, 2 | 2017-12-19 |
Forming Tools Having Textured Surfaces App 20160199899 - XIA; ZHIYONG CEDRIC ;   et al. | 2016-07-14 |
Forming tools having textured surfaces Grant 9,321,090 - Xia , et al. April 26, 2 | 2016-04-26 |
Cutting tools with textured surfaces Grant 9,144,845 - Grzina , et al. September 29, 2 | 2015-09-29 |
Forming Tools Having Textured Surfaces App 20130291613 - Xia; Zhiyong Cedric ;   et al. | 2013-11-07 |
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