Wei Liu

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Conroe, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole drill bit with coated cutting element
- Patent number 10,787,737
- Issue date Sep 29, 2020
- National Oilwell DHT, L.P.
- Anil Kumar
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Systems and Methods of Fabrication and Use of Wear-Resistant Materials
- Publication number 20190022759
- Publication date Jan 24, 2019
- National Oilwell DHT, L.P.
- Biju Pillai Kumar
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Downhole Drill Bit with Coated Cutting Element
- Publication number 20180305810
- Publication date Oct 25, 2018
- National Oilwell DHT, L.P.
- Anil Kumar
- E21 - EARTH DRILLING MINING