Tjandra Sukendro

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Conroe, 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
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

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