Li; Qingzhao

Patent Applications and Registrations

Patent applications and USPTO patent grants for Li; Qingzhao.The latest application filed is for "method for extracting gas by fracturing coal seam through combination of hydraulic slotting and multi-stage combustion impact wave".

Company Profile

0.3.3

Li; Qingzhao - Jiangsu CN
LI; Qingzhao - Xuzhou Jiangsu

*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
Method for extracting gas by fracturing coal seam through combination of hydraulic slotting and multi-stage combustion impact wave Grant 11,131,172 - Lin , et al. September 28, 2	2021-09-28
Method For Extracting Gas By Fracturing Coal Seam Through Combination Of Hydraulic Slotting And Multi-stage Combustion Impact Wave App 20210148205 - LIN; Baiquan ; et al.	2021-05-20
Self-regenerative integrated device for synergetic oxidation of low-concentration gas and ventilation gas in coal mine Grant 10,022,668 - Lin , et al. July 17, 2	2018-07-17
Mine area distributed combined cooling heating power energy system for extracting gas for coal mine Grant 9,605,512 - Lin , et al. March 28, 2	2017-03-28
Self-regenerative Integrated Device For Synergetic Oxidation Of Low-concentration Gas And Ventilation Gas In Coal Mine App 20160136575 - LIN; Baiquan ; et al.	2016-05-19
Mine Area Distributed Combined Cooling Heating Power Energy System For Extracting Gas For Coal Mine App 20150159470 - Lin; Baiquan ; et al.	2015-06-11

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