Dah-Ben Liang

Person

Kingwood, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Low coefficient of thermal expansion cermet compositions
- Patent number 8,956,438
- Issue date Feb 17, 2015
- Smith International, Inc.
- Zhigang Fang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Hardmetal for use in oil and gas drilling applications
- Patent number 8,561,731
- Issue date Oct 22, 2013
- Smith International, Inc.
- Madapusi K. Keshavan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Low coefficient of thermal expansion cermet compositions
- Patent number 8,323,372
- Issue date Dec 4, 2012
- Smith International, Inc.
- Zhigang Fang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Asymmetric graded composites for improved drill bits
- Patent number 8,016,056
- Issue date Sep 13, 2011
- Sandvik Intellectual Property AB
- Ramamurthy K. Viswanadham
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Cutting elements with increased toughness and thermal fatigue resis...
- Patent number 7,832,506
- Issue date Nov 16, 2010
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Hardfacing milled-tooth drill bits using super dense carbide pellets
- Patent number 7,666,244
- Issue date Feb 23, 2010
- Smith International, Inc.
- Gregory T. Lockwood
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of finishing cutting elements
- Patent number 7,549,912
- Issue date Jun 23, 2009
- Smith International, Inc.
- Dah-Ben Liang
- B24 - GRINDING POLISHING
Information Patent Grant
High-strength, high-toughness matrix bit bodies
- Patent number 7,475,743
- Issue date Jan 13, 2009
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Fracture and wear resistant compounds and down hole cutting tools
- Patent number 7,407,525
- Issue date Aug 5, 2008
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Fracture and wear resistant compounds and rock bits
- Patent number 7,258,177
- Issue date Aug 21, 2007
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Compositions having enhanced wear resistance
- Patent number 7,128,773
- Issue date Oct 31, 2006
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Fracture and wear resistant compounds and rock bits
- Patent number 7,036,614
- Issue date May 2, 2006
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Coarse carbide substrate cutting elements and method of forming the...
- Patent number 7,017,677
- Issue date Mar 28, 2006
- Smith International, Inc.
- Madapusi K. Keshavan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Hardfacing for milled tooth drill bits
- Patent number 6,782,958
- Issue date Aug 31, 2004
- Smith International, Inc.
- Dah-Ben Liang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Hardfacing composition for rock bits
- Patent number 6,659,206
- Issue date Dec 9, 2003
- Smith International, Inc.
- Dah-ben Liang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Fracture and wear resistant rock bits
- Patent number 6,655,478
- Issue date Dec 2, 2003
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Thermal fatigue and shock-resistant material for earth-boring bits
- Patent number 6,197,084
- Issue date Mar 6, 2001
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Hardfacing material for rock bits
- Patent number 5,944,127
- Issue date Aug 31, 1999
- Smith International, Inc.
- Dah-Ben Liang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Rock bit with hardfacing material incorporating spherical cast carb...
- Patent number 5,791,422
- Issue date Aug 11, 1998
- Smith International, Inc.
- Dah-Ben Liang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Hard facing material for rock bits
- Patent number 5,715,899
- Issue date Feb 10, 1998
- Smith International, Inc.
- Dah-Ben Liang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Rock bit with mechanical seal
- Patent number 5,472,058
- Issue date Dec 5, 1995
- Smith International, Inc.
- Michael E. Hooper
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit inserts enhanced with polycrystalline diamond
- Patent number 5,370,195
- Issue date Dec 6, 1994
- Smith International, Inc.
- Madapusi K. Keshavan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit with cobalt alloy cemented tungsten carbide inserts
- Patent number 5,305,840
- Issue date Apr 26, 1994
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
LOW COEFFICIENT OF THERMAL EXPANSION CERMET COMPOSITIONS
- Publication number 20130092449
- Publication date Apr 18, 2013
- Smith International, Inc.
- Zhigang Fang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
NOVEL HARDMETAL FOR USE IN OIL AND GAS DRILLING APPLICATIONS
- Publication number 20110168454
- Publication date Jul 14, 2011
- Smith International, Inc.
- Madapusi K. Keshavan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
CUTTING ELEMENTS WITH INCREASED TOUGHNESS AND THERMAL FATIGUE RESIS...
- Publication number 20080245576
- Publication date Oct 9, 2008
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
High-strength, high-toughness matrix bit bodies
- Publication number 20070175669
- Publication date Aug 2, 2007
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method of finishing cutting elements
- Publication number 20070032173
- Publication date Feb 8, 2007
- Smith International, Inc.
- Dah-Ben Liang
- B24 - GRINDING POLISHING
Information Patent Application
Asymmetric graded composites for improved drill bits
- Publication number 20070000699
- Publication date Jan 4, 2007
- Smith International, Inc.
- Ramamurthy K. Viswanadham
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Fracture and wear resistant compounds and rock bits
- Publication number 20060254828
- Publication date Nov 16, 2006
- Smith International, Inc.
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Hardfacing milled-tooth drill bits using super dense carbide pellets
- Publication number 20060005662
- Publication date Jan 12, 2006
- Smith International, Inc.
- Greg Lockwood
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Drill bit having increased resistance to fatigue cracking and metho...
- Publication number 20050252691
- Publication date Nov 17, 2005
- Smith International, Inc.
- Kenneth Bramlett
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Compositions having enhanced wear resistance
- Publication number 20050000317
- Publication date Jan 6, 2005
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Fracture and wear resistant compounds and down hole cutting tools
- Publication number 20040140133
- Publication date Jul 22, 2004
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Coarse carbide substrate cutting elements and method of forming the...
- Publication number 20040016557
- Publication date Jan 29, 2004
- Madapusi K. Keshavan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Fracture and wear resistant compounds and rock bits
- Publication number 20030226693
- Publication date Dec 11, 2003
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Hardfacing for milled tooth drill bits
- Publication number 20030183425
- Publication date Oct 2, 2003
- Dah-Ben Liang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Fracture and wear resistant rock bits
- Publication number 20030111272
- Publication date Jun 19, 2003
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Hardfacing composition for rock bits
- Publication number 20030079565
- Publication date May 1, 2003
- Dah-ben Liang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Thermal fatigue and shock-resistant material for earth-boring bits
- Publication number 20020124688
- Publication date Sep 12, 2002
- Dah-Ben Liang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Dah-Ben Liang

Person

Patents Grantslast 30 patents

Low coefficient of thermal expansion cermet compositions

Hardmetal for use in oil and gas drilling applications

Low coefficient of thermal expansion cermet compositions

Asymmetric graded composites for improved drill bits

Cutting elements with increased toughness and thermal fatigue resis...

Hardfacing milled-tooth drill bits using super dense carbide pellets

Method of finishing cutting elements

High-strength, high-toughness matrix bit bodies

Fracture and wear resistant compounds and down hole cutting tools

Fracture and wear resistant compounds and rock bits

Compositions having enhanced wear resistance

Fracture and wear resistant compounds and rock bits

Coarse carbide substrate cutting elements and method of forming the...

Hardfacing for milled tooth drill bits

Hardfacing composition for rock bits

Fracture and wear resistant rock bits

Thermal fatigue and shock-resistant material for earth-boring bits

Hardfacing material for rock bits

Rock bit with hardfacing material incorporating spherical cast carb...

Hard facing material for rock bits

Rock bit with mechanical seal

Drill bit inserts enhanced with polycrystalline diamond

Rock bit with cobalt alloy cemented tungsten carbide inserts

Patents Applicationslast 30 patents

LOW COEFFICIENT OF THERMAL EXPANSION CERMET COMPOSITIONS

NOVEL HARDMETAL FOR USE IN OIL AND GAS DRILLING APPLICATIONS

CUTTING ELEMENTS WITH INCREASED TOUGHNESS AND THERMAL FATIGUE RESIS...

High-strength, high-toughness matrix bit bodies

Method of finishing cutting elements

Asymmetric graded composites for improved drill bits

Fracture and wear resistant compounds and rock bits

Hardfacing milled-tooth drill bits using super dense carbide pellets

Drill bit having increased resistance to fatigue cracking and metho...

Compositions having enhanced wear resistance

Fracture and wear resistant compounds and down hole cutting tools

Coarse carbide substrate cutting elements and method of forming the...

Fracture and wear resistant compounds and rock bits

Hardfacing for milled tooth drill bits

Fracture and wear resistant rock bits

Hardfacing composition for rock bits

Thermal fatigue and shock-resistant material for earth-boring bits