Liu; Zhiren

Patent Applications and Registrations

Patent applications and USPTO patent grants for Liu; Zhiren.The latest application filed is for "synchronizing assembly for elevator door and elevator".

Company Profile

2.3.9

Liu; Zhiren - Shanghai CN
LIU; Zhiren - Atlanta GA
Liu; Zhiren - Zhejiang CN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Governor assembly for elevator system, elevator safety system and elevator system Grant 11,453,571 - Liu September 27, 2	2022-09-27
Synchronizing Assembly For Elevator Door And Elevator App 20210139285 - Liu; Zhiren ; et al.	2021-05-13
Coupling Device Between An Elevator Car Door And A Landing Door And Elevator System App 20210130135 - Liu; Zhiren ; et al.	2021-05-06
Contrast Agents, Methods For Preparing Contrast Agents, And Methods Of Imaging App 20210038745 - YANG; Jenny Jie ; et al.	2021-02-11
Governor Assembly For Elevator System, Elevator Safety System And Elevator System App 20200407193 - Liu; Zhiren	2020-12-31
Contrast agents, methods for preparing contrast agents, and methods of imaging Grant 10,849,993 - Yang , et al. December 1, 2	2020-12-01
Contrast Agents, Methods For Preparing Contrast Agents, And Methods Of Imaging App 20180250426 - Yang; Jenny Jie ; et al.	2018-09-06
Contrast agents, methods for preparing contrast agents, and methods of imaging Grant 9,956,304 - Yang , et al. May 1, 2	2018-05-01
Contrast Agents, Methods For Preparing Contrast Agents, And Methods Of Imaging App 20150202330 - Yang; Jenny Jie ; et al.	2015-07-23
Contrast Agents, Methods For Preparing Contrast Agents, And Methods Of Imaging App 20110097742 - Yang; Jenny Jie ; et al.	2011-04-28
Use Of Hydrochloric Acid In The Manufacture Of Medicament For Treating Disease Caused By Fouling Of Transport Tract App 20100055204 - Liu; Zhiren	2010-03-04
Use of Hydrochloric Acid For the Manufacture of a Medicament For the Treatment of Hypertension App 20080317871 - Liu; Zhiren	2008-12-25

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