David M. Nguyen

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Wear indicator for rotary drilling tools
- Patent number 6,167,833
- Issue date Jan 2, 2001
- Camco International Inc.
- Douglas Bruce Caraway
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multiple diamond layer polycrystalline diamond composite cutters
- Patent number 5,722,499
- Issue date Mar 3, 1998
- Smith International, Inc.
- David M. Nguyen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit having improved cutting element retention system
- Patent number 5,007,493
- Issue date Apr 16, 1991
- Dresser Industries, Inc.
- Robert B. Coolidge
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit having a replaceable, threaded nozzle with wrench...
- Patent number 4,703,814
- Issue date Nov 3, 1987
- Hughes Tool Company - USA
- David M. Nguyen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Matrix bit with extended blades
- Patent number 4,667,756
- Issue date May 26, 1987
- Hughes Tool Company - USA
- William W. King
- B22 - CASTING POWDER METALLURGY