Zhang; Haijiang

Patent Applications and Registrations

Patent applications and USPTO patent grants for Zhang; Haijiang.The latest application filed is for "equipment system for no-roadway no-coal-pillar retained roadway mining method".

Company Profile

0.8.6

Zhang; Haijiang - Beijing CN
Zhang; Haijiang - Anhui N/A CN
Zhang; Haijiang - Milpitas CA US
Zhang; Haijiang - Hefei CN
Zhang; Haijiang - Tianjin 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
Equipment system for no-roadway no-coal-pillar retained roadway mining method Grant 11,008,860 - He , et al. May 18, 2	2021-05-18
Equipment System For No-roadway No-coal-pillar Retained Roadway Mining Method App 20180187548 - HE; Manchao ; et al.	2018-07-05
Method and system of determining earthquake parameters, earthquake search engine Grant 9,239,395 - Zhang , et al. January 19, 2	2016-01-19
Photonic devices based on vertical-cavity semiconductor optical amplifiers Grant 9,036,253 - Esener , et al. May 19, 2	2015-05-19
Method And System Of Determining Earthquake Parameters, Earthquake Search Engine App 20130261982 - Zhang; Jie ; et al.	2013-10-03
System and method for testing gas migration process in coal-rock mass Grant 8,418,526 - He , et al. April 16, 2	2013-04-16
System And Method For Testing Gas Migration Process In Coal-rock Mass App 20120118041 - He; Manchao ; et al.	2012-05-17
Photonic Devices Based On Vertical-Cavity Semiconductor Optical Amplifiers App 20100027104 - Esener; Sadik C. ; et al.	2010-02-04
Preparation for cardio-cerebral blood vessel diseases and its preparing method Grant 7,396,545 - Cheng , et al. July 8, 2	2008-07-08
Traditional chinese medicine preparation for cardio-cerebral blood vessel diseases and its preparing method App 20070071834 - Cheng; Yiyu ; et al.	2007-03-29

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