Inventor · disambiguated record
John (Youhe) Zhang
Also filed as: ZHANG JOHN · ZHANG JOHN YOUHE
4 granted patents·120 citations·filing 2002–2007
78Inventor score
Top patents by PatentIndex Score
4 records- 0196US7044243B2High-strength/high-toughness alloy steel drill bit blankSMITH INTERNATIONAL·Filed 2003·Granted May 16, 2006·94 cites·21 claims
- 0292US7395884B2High-strength/high toughness alloy steel drill bit blankSMITH INTERNATIONAL·Filed 2006·Granted Jul 8, 2008·11 cites·21 claims
- 0350US6698538B2Drill bit having adjustable total flow areaSMITH INTERNATIONAL·Filed 2002·Granted Mar 2, 2004·13 cites·16 claims
- 0448US8322467B2Cutting element having stress reduced interfaceSHEN YUELIN·Filed 2007·Granted Dec 4, 2012·2 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →