Trung Leduc

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Adaptor flange for rotary control device
- Patent number 9,038,729
- Issue date May 26, 2015
- Smith International, Inc.
- Trung Leduc
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Multiple sealing element assembly
- Patent number 8,820,747
- Issue date Sep 2, 2014
- Smith International, Inc.
- Alberto Zubia
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Flushing procedure for rotating control device
- Patent number 8,381,816
- Issue date Feb 26, 2013
- Smith International, Inc.
- Trung Leduc
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Dual stripper rubber cartridge with leak detection
- Patent number 7,950,474
- Issue date May 31, 2011
- Smith International, Inc.
- Trung Leduc
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual stripper rubber cartridge with leak detection
- Patent number 7,802,635
- Issue date Sep 28, 2010
- Smith International, Inc.
- Trung Leduc
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
ADAPTOR FLANGE FOR ROTARY CONTROL DEVICE
- Publication number 20120073113
- Publication date Mar 29, 2012
- Smith International, Inc.
- Trung Leduc
- E21 - EARTH DRILLING MINING
Information Patent Application
MULTIPLE SEALING ELEMENT ASSEMBLY
- Publication number 20120043726
- Publication date Feb 23, 2012
- Smith International, Inc.
- Alberto Zubia
- E21 - EARTH DRILLING MINING
Information Patent Application
FLUSHING PROCEDURE FOR ROTATING CONTROL DEVICE
- Publication number 20110214871
- Publication date Sep 8, 2011
- Smith International, Inc.
- Trung Leduc
- E21 - EARTH DRILLING MINING
Information Patent Application
DUAL STRIPPER RUBBER CARTRIDGE WITH LEAK DETECTION
- Publication number 20100269570
- Publication date Oct 28, 2010
- Smith International, Inc.
- Trung Leduc
- E21 - EARTH DRILLING MINING
Information Patent Application
DUAL STRIPPER RUBBER CARTRIDGE WITH LEAK DETECTION
- Publication number 20090152006
- Publication date Jun 18, 2009
- Smith International, Inc.
- Trung Leduc
- E21 - EARTH DRILLING MINING