Lei Yan

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Borehole drilling optimization with multiple cutting structures
- Patent number 8,799,198
- Issue date Aug 5, 2014
- Smith International, Inc.
- Arifin Purwanto
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Borehole Drilling Optimization With Multiple Cutting Structures
- Publication number 20110232968
- Publication date Sep 29, 2011
- Smith International, Inc.
- Arifin Purwanto
- E21 - EARTH DRILLING MINING
Information Patent Application
Aggregating Web Datastore Server for Drilling Information
- Publication number 20080294606
- Publication date Nov 27, 2008
- Smith International, Inc.
- David P. Moran
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD OF REAL-TIME DRILLING SIMULATION
- Publication number 20070185696
- Publication date Aug 9, 2007
- Smith International, Inc.
- David P. Moran
- G05 - CONTROLLING REGULATING