Zhang; John (Youhe)
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zhang; John (Youhe).The latest application filed is for "cutting element having stress reduced interface".
- Zhang; John (Youhe) - Youhe
- Zhang; John Youhe - Tomball TX
| Patent | Date |
|---|---|
| Cutting element having stress reduced interface Grant 8,322,467 - Shen , et al. December 4, 2 | 2012-12-04 |
| Stress relief feature on PDC cutter Grant 7,740,090 - Shen , et al. June 22, 2 | 2010-06-22 |
| Cutting Element Having Stress Reduced Interface App 20090090562 - SHEN; Yuelin ; et al. | 2009-04-09 |
| High-strength/high toughness alloy steel drill bit blank Grant 7,395,884 - Kembaiyan , et al. July 8, 2 | 2008-07-08 |
| Stress relief feature on PDC cutter App 20060219439 - Shen; Yuelin ; et al. | 2006-10-05 |
| High-strength/high toughness alloy steel drill bit blank App 20060201718 - Kembaiyan; Kumar T. ; et al. | 2006-09-14 |
| High-strength/high-toughness alloy steel drill bit blank Grant 7,044,243 - Kembaiyan , et al. May 16, 2 | 2006-05-16 |
| High-strength/high-toughness alloy steel drill bit blank App 20040149494 - Kembaiyan, Kumar T. ; et al. | 2004-08-05 |
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