Zhang; Zhehua
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zhang; Zhehua.The latest application filed is for "multi-piece body manufacturing method of hybrid bit".
- Zhang; Zhehua - The Woodlands TX
- Zhang; Zhehua - Houston TX
| Patent | Date |
|---|---|
| Methods for designing fixed cutter bits and bits made using such methods Grant 9,850,717 - Zhang , et al. December 26, 2 | 2017-12-26 |
| Hybrid disc bit with optimized PDC cutter placement Grant 9,574,405 - Cariveau , et al. February 21, 2 | 2017-02-21 |
| Multi-Piece Body Manufacturing Method Of Hybrid Bit App 20160319602 - Zhang; Zhehua | 2016-11-03 |
| High-shear roller cone and PDC hybrid bit Grant 9,033,069 - Zhang May 19, 2 | 2015-05-19 |
| Balancing Of Drill Bits App 20150101868 - Tedeschi; Luca ; et al. | 2015-04-16 |
| Manufacturing methods for high shear roller cone bits Grant 8,955,413 - Bijai , et al. February 17, 2 | 2015-02-17 |
| Hybrid Bit With Roller Cones Near The Bit Axis App 20140353046 - Zhang; Zhehua ; et al. | 2014-12-04 |
| High Shear Roller Cone Drill Bits App 20140196956 - Centala; Prabhakaran K. ; et al. | 2014-07-17 |
| Methods For Designing Fixed Cutter Bits And Bits Made Using Such Methods App 20140110181 - Zhang; Zhehua ; et al. | 2014-04-24 |
| High shear roller cone drill bits Grant 8,672,060 - Centala , et al. March 18, 2 | 2014-03-18 |
| High-shear Roller Cone And Pdc Hybrid Bit App 20110162893 - Zhang; Zhehua | 2011-07-07 |
| Manufacturing Methods For High Shear Roller Cone Bits App 20110023663 - Bijai; Rahul ; et al. | 2011-02-03 |
| High Shear Roller Cone Drill Bits App 20110024197 - Centala; Prabhakaran K. ; et al. | 2011-02-03 |
| Hybrid disc bit with optimized PDC cutter placement App 20070062736 - Cariveau; Peter Thomas ; et al. | 2007-03-22 |
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