Liang; Dah-Ben

Patent Applications and Registrations

Patent applications and USPTO patent grants for Liang; Dah-Ben.The latest application filed is for "low coefficient of thermal expansion cermet compositions".

Company Profile

0.23.17

Liang; Dah-Ben - The Woodlands TX
Liang; Dah-Ben - Woodlands TX
Liang; Dah-Ben - Kingwood TX

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Low coefficient of thermal expansion cermet compositions Grant 8,956,438 - Fang , et al. February 17, 2	2015-02-17
Hardmetal for use in oil and gas drilling applications Grant 8,561,731 - Keshavan , et al. October 22, 2	2013-10-22
Low Coefficient Of Thermal Expansion Cermet Compositions App 20130092449 - Fang; Zhigang ; et al.	2013-04-18
Low coefficient of thermal expansion cermet compositions Grant 8,323,372 - Fang , et al. December 4, 2	2012-12-04
Asymmetric graded composites for improved drill bits Grant 8,016,056 - Viswanadham , et al. September 13, 2	2011-09-13
Novel Hardmetal For Use In Oil And Gas Drilling Applications App 20110168454 - Keshavan; Madapusi K. ; et al.	2011-07-14
Cutting elements with increased toughness and thermal fatigue resistance for drilling applications Grant 7,832,506 - Liang , et al. November 16, 2	2010-11-16
Hardfacing milled-tooth drill bits using super dense carbide pellets Grant 7,666,244 - Lockwood , et al. February 23, 2	2010-02-23
Method of finishing cutting elements Grant 7,549,912 - Liang , et al. June 23, 2	2009-06-23
High-strength, high-toughness matrix bit bodies Grant 7,475,743 - Liang , et al. January 13, 2	2009-01-13
Cutting Elements With Increased Toughness And Thermal Fatigue Resistance For Drilling Applications App 20080245576 - Liang; Dah-Ben ; et al.	2008-10-09
Fracture and wear resistant compounds and down hole cutting tools Grant 7,407,525 - Liang August 5, 2	2008-08-05
Fracture and wear resistant compounds and rock bits Grant 7,258,177 - Liang , et al. August 21, 2	2007-08-21
High-strength, high-toughness matrix bit bodies App 20070175669 - Liang; Dah-Ben ; et al.	2007-08-02
Method of finishing cutting elements App 20070032173 - Liang; Dah-Ben ; et al.	2007-02-08
Asymmetric graded composites for improved drill bits App 20070000699 - Viswanadham; Ramamurthy K. ; et al.	2007-01-04
Fracture and wear resistant compounds and rock bits App 20060254828 - Liang; Dah-Ben ; et al.	2006-11-16
Compositions having enhanced wear resistance Grant 7,128,773 - Liang , et al. October 31, 2	2006-10-31
Fracture and wear resistant compounds and rock bits Grant 7,036,614 - Liang , et al. May 2, 2	2006-05-02
Coarse carbide substrate cutting elements and method of forming the same Grant 7,017,677 - Keshavan , et al. March 28, 2	2006-03-28
Hardfacing milled-tooth drill bits using super dense carbide pellets App 20060005662 - Lockwood; Greg ; et al.	2006-01-12
Drill bit having increased resistance to fatigue cracking and method of producing same App 20050252691 - Bramlett, Kenneth ; et al.	2005-11-17
Compositions having enhanced wear resistance App 20050000317 - Liang, Dah-Ben ; et al.	2005-01-06
Hardfacing for milled tooth drill bits Grant 6,782,958 - Liang , et al. August 31, 2	2004-08-31
Fracture and wear resistant compounds and down hole cutting tools App 20040140133 - Liang, Dah-Ben	2004-07-22
Coarse carbide substrate cutting elements and method of forming the same App 20040016557 - Keshavan, Madapusi K. ; et al.	2004-01-29
Fracture and wear resistant compounds and rock bits App 20030226693 - Liang, Dah-Ben ; et al.	2003-12-11
Hardfacing composition for rock bits Grant 6,659,206 - Liang , et al. December 9, 2	2003-12-09
Fracture and wear resistant rock bits Grant 6,655,478 - Liang , et al. December 2, 2	2003-12-02
Hardfacing for milled tooth drill bits App 20030183425 - Liang, Dah-Ben ; et al.	2003-10-02
Fracture and wear resistant rock bits App 20030111272 - Liang, Dah-Ben ; et al.	2003-06-19
Hardfacing composition for rock bits App 20030079565 - Liang, Dah-ben ; et al.	2003-05-01
Thermal fatigue and shock-resistant material for earth-boring bits App 20020124688 - Liang, Dah-Ben	2002-09-12
Thermal fatigue and shock-resistant material for earth-boring bits Grant 6,197,084 - Liang March 6, 2	2001-03-06
Rock bit with hardfacing material incorporating spherical cast carbide particles Grant 5,791,422 - Liang , et al. August 11, 1	1998-08-11
Hard facing material for rock bits Grant 5,715,899 - Liang , et al. February 10, 1	1998-02-10
Rock bit with mechanical seal Grant 5,472,058 - Hooper , et al. December 5, 1	1995-12-05
Drill bit inserts enhanced with polycrystalline diamond Grant 5,370,195 - Keshavan , et al. December 6, 1	1994-12-06
Rock bit with cobalt alloy cemented tungsten carbide inserts Grant 5,305,840 - Liang , et al. April 26, 1	1994-04-26

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