Thang Vo

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Hybrid rolling cone drill bits and methods for manufacturing same
- Patent number 9,840,874
- Issue date Dec 12, 2017
- National-Oilwell DHT, L.P.
- Thang Vo
- B24 - GRINDING POLISHING
Information Patent Grant
Rock bit and cutter teeth geometries
- Patent number 9,328,562
- Issue date May 3, 2016
- National-Oilwell Varco, L.P.
- Thang Vo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hybrid rolling cone drill bits and methods for manufacturing same
- Patent number 9,249,628
- Issue date Feb 2, 2016
- National Oilwell DHT, L.P.
- Thang Vo
- B24 - GRINDING POLISHING
Information Patent Grant
Apparatus and method for retaining inserts of a rolling cone drill bit
- Patent number 9,140,071
- Issue date Sep 22, 2015
- National Oilwell DHT, L.P.
- Thang Vo
- B24 - GRINDING POLISHING
Information Patent Grant
Drill bit with enhanced hydraulics and erosion-shield cutting teeth
- Patent number 8,733,475
- Issue date May 27, 2014
- National Oilwell DHT, L.P.
- Thang Vo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit and cutter teeth geometries
- Patent number 8,607,899
- Issue date Dec 17, 2013
- National-Oilwell Varco, L.P.
- Thang Vo
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Hybrid Rolling Cone Drill Bits and Methods for Manufacturing Same
- Publication number 20160108681
- Publication date Apr 21, 2016
- National Oilwell DHT, L.P.
- Thang Vo
- E21 - EARTH DRILLING MINING
Information Patent Application
APPARATUS AND METHOD FOR RETAINING INSERTS OF A ROLLING CONE DRILL BIT
- Publication number 20140144709
- Publication date May 29, 2014
- National Oilwell DHT, L.P.
- Thang Vo
- E21 - EARTH DRILLING MINING
Information Patent Application
Hybrid Rolling Cone Drill Bits and Methods for Manufacturing Same
- Publication number 20140138161
- Publication date May 22, 2014
- National Oilwell DHT, L.P.
- Thang Vo
- E21 - EARTH DRILLING MINING
Information Patent Application
Rock Bit and Cutter Teeth Geometries
- Publication number 20140076639
- Publication date Mar 20, 2014
- Thang Vo
- E21 - EARTH DRILLING MINING
Information Patent Application
ROCK BIT AND CUTTER TEETH GEOMETRIES
- Publication number 20120211282
- Publication date Aug 23, 2012
- National-Oilwell Varco, L.P.
- Thang Vo
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILL BIT WITH ENHANCED HYDRAULICS AND EROSION-SHIELD CUTTING TEETH
- Publication number 20120193149
- Publication date Aug 2, 2012
- National Oilwell DHT, L.P.
- Tom Roberts
- E21 - EARTH DRILLING MINING