Inventor · disambiguated record
Dah-Ben Liang
Also filed as: LIANG DAH-BEN
24 granted patents·2 pending applications·1,145 citations·filing 1982–2012
97Inventor score
Files withSMITH INTERNATIONAL21FANG ZHIGANG1KENNAMETAL INC1KESHAVAN MADAPUSI K1SANDVIK INTELLECTUAL PROPERTY1
Top patents by PatentIndex Score
26 records- 0197US5370195ADrill bit inserts enhanced with polycrystalline diamondSMITH INTERNATIONAL·Filed 1993·Granted Dec 6, 1994·365 cites·33 claims
- 0295US7128773B2Compositions having enhanced wear resistanceSMITH INTERNATIONAL·Filed 2004·Granted Oct 31, 2006·45 cites·12 claims
- 0394US7666244B2Hardfacing milled-tooth drill bits using super dense carbide pelletsSMITH INTERNATIONAL·Filed 2005·Granted Feb 23, 2010·18 cites·20 claims
- 0492US7017677B2Coarse carbide substrate cutting elements and method of forming the sameSMITH INTERNATIONAL·Filed 2003·Granted Mar 28, 2006·109 cites·31 claims
- 0591US7832506B2Cutting elements with increased toughness and thermal fatigue resistance for drilling applicationsSMITH INTERNATIONAL·Filed 2008·Granted Nov 16, 2010·10 cites·37 claims
- 0691US7475743B2High-strength, high-toughness matrix bit bodiesSMITH INTERNATIONAL·Filed 2006·Granted Jan 13, 2009·40 cites·17 claims
- 0791US6782958B2Hardfacing for milled tooth drill bitsSMITH INTERNATIONAL·Filed 2002·Granted Aug 31, 2004·65 cites·8 claims
- 0887US6659206B2Hardfacing composition for rock bitsSMITH INTERNATIONAL·Filed 2001·Granted Dec 9, 2003·78 cites·54 claims
- 0987US5791422ARock bit with hardfacing material incorporating spherical cast carbide particlesSMITH INTERNATIONAL·Filed 1997·Granted Aug 11, 1998·75 cites·27 claims
- 1084US7549912B2Method of finishing cutting elementsSMITH INTERNATIONAL·Filed 2005·Granted Jun 23, 2009·11 cites·18 claims
- 1183US5715899AHard facing material for rock bitsSMITH INTERNATIONAL·Filed 1996·Granted Feb 10, 1998·62 cites·14 claims
- 1282US5472058ARock bit with mechanical sealSMITH INTERNATIONAL·Filed 1994·Granted Dec 5, 1995·46 cites·24 claims
- 1380US5944127AHardfacing material for rock bitsSMITH INTERNATIONAL·Filed 1997·Granted Aug 31, 1999·47 cites·24 claims
- 1480US5305840ARock bit with cobalt alloy cemented tungsten carbide insertsSMITH INTERNATIONAL·Filed 1992·Granted Apr 26, 1994·68 cites·29 claims
- 1573US8016056B2Asymmetric graded composites for improved drill bitsSANDVIK INTELLECTUAL PROPERTY·Filed 2006·Granted Sep 13, 2011·13 cites·12 claims
- 1673US6197084B1Thermal fatigue and shock-resistant material for earth-boring bitsSMITH INTERNATIONAL·Filed 1999·Granted Mar 6, 2001·19 cites·12 claims
- 1770US7258177B2Fracture and wear resistant compounds and rock bitsSMITH INTERNATIONAL·Filed 2006·Granted Aug 21, 2007·9 cites·15 claims
- 1862US8956438B2Low coefficient of thermal expansion cermet compositionsSMITH INTERNATIONAL·Filed 2012·Granted Feb 17, 2015·0 cites·13 claims
- 1960US8323372B1Low coefficient of thermal expansion cermet compositionsFANG ZHIGANG·Filed 2000·Granted Dec 4, 2012·7 cites·11 claims
- 2059US6655478B2Fracture and wear resistant rock bitsSMITH INTERNATIONAL·Filed 2001·Granted Dec 2, 2003·21 cites·17 claims
- 2158US7036614B2Fracture and wear resistant compounds and rock bitsSMITH INTERNATIONAL·Filed 2003·Granted May 2, 2006·16 cites·15 claims
- 2254US8561731B2Hardmetal for use in oil and gas drilling applicationsKESHAVAN MADAPUSI K·Filed 2009·Granted Oct 22, 2013·3 cites·16 claims
- 2346US2002124688A1Thermal fatigue and shock-resistant material for earth-boring bitsFiled 2001·Application pending·0 cites
- 2445US7407525B2Fracture and wear resistant compounds and down hole cutting toolsSMITH INTERNATIONAL·Filed 2003·Granted Aug 5, 2008·7 cites·37 claims
- 2545US2005252691A1Drill bit having increased resistance to fatigue cracking and method of producing sameSMITH INTERNATIONAL·Filed 2005·Application pending·0 cites
- 2641US4549615ASingle-pass notching and drilling tool and method of drilling a blast role therewithKENNAMETAL INC·Filed 1982·Granted Oct 29, 1985·11 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →