Guanhua Ni

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Drilling-slitting-sealing-fracturing device and method for a deep l...
- Patent number 11,506,041
- Issue date Nov 22, 2022
- Shandong University of Science and Technology
- Gang Wang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Full-length screen pipe hole protection device and method with pres...
- Patent number 11,396,810
- Issue date Jul 26, 2022
- Shandong University of Science and Technology
- Guanhua Ni
- E21 - EARTH DRILLING MINING
Information Patent Grant
Test apparatus and a test method for the wetted perimeter of coal s...
- Patent number 10,253,629
- Issue date Apr 9, 2019
- Shandong University of Science and Technology
- Weimin Cheng
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

Information Patent Application
DEEP LOW-PERMEABILITY HIGH GASSY SEAM DRILLING-SLITTING-SEALING-FRA...
- Publication number 20220213773
- Publication date Jul 7, 2022
- SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Gang WANG
- E21 - EARTH DRILLING MINING
Information Patent Application
FULL-LENGTH SCREEN PIPE HOLE PROTECTION DEVICE AND METHOD WITH PRES...
- Publication number 20220205361
- Publication date Jun 30, 2022
- SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Guanhua NI
- E21 - EARTH DRILLING MINING