Hongliang Chen

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Zhengzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Polymer composite grouting method for blocking leaking and sand inr...
- Patent number 9,777,881
- Issue date Oct 3, 2017
- SAFEKEY Engineering Technology(Zhengzhou), Ltd.
- Fuming Wang
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Grouting method for anchoring with polymer
- Patent number 9,004,820
- Issue date Apr 14, 2015
- SAFEKEY Engineering Technology(Zhengzhou), Ltd.
- Fuming Wang
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Polymer composite grouting method for blocking leaking and sand inr...
- Publication number 20160169435
- Publication date Jun 16, 2016
- SAFEKEY Engineering Technology(Zhengzhou), Ltd.
- Fuming Wang
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Polymer grouting method for constructing multi-wing pile
- Publication number 20140314496
- Publication date Oct 23, 2014
- Henan Polytech Infrastructure Rehabilitation LTD.
- Fuming Wang
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Grouting method for anchoring with polymer
- Publication number 20140314503
- Publication date Oct 23, 2014
- Henan Polytech Infrastructure Rehabilitation LTD.
- Fuming Wang
- E21 - EARTH DRILLING MINING