Nguyen; Don Q.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nguyen; Don Q..The latest application filed is for "hybrid drill bit and design method".
Company Profile
4.29.31
- Nguyen; Don Q. - Houston TX
- Nguyen; Don Q. - Housten TX
Patent Activity
| Patent | Date |
|---|---|
| Hybrid drill bit and design method Grant 10,871,036 - Zahradnik , et al. December 22, 2 | 2020-12-22 |
| Hybrid Drill Bit And Design Method App 20190352971 - Zahradnik; Anton F. ; et al. | 2019-11-21 |
| Hybrid drill bit and design method Grant 10,316,589 - Zahradnik , et al. | 2019-06-11 |
| Hybrid drill bits having increased drilling efficiency Grant 10,190,366 - Zahradnik , et al. Ja | 2019-01-29 |
| Hybrid drill bits Grant 10,072,462 - Zahradnik , et al. September 11, 2 | 2018-09-11 |
| Hybrid drill bit having increased service life Grant 9,782,857 - Nguyen , et al. October 10, 2 | 2017-10-10 |
| Hybrid drill bit Grant 9,670,736 - Zahradnik , et al. June 6, 2 | 2017-06-06 |
| Hybrid Drill Bits Having Increased Drilling Efficiency App 20160251902 - ZAHRADNIK; Anton F. ; et al. | 2016-09-01 |
| Hybrid Drill Bits App 20160230467 - Zahradnik; Anton F. ; et al. | 2016-08-11 |
| Hybrid drill bits having increased drilling efficiency Grant 9,353,575 - Zahradnik , et al. May 31, 2 | 2016-05-31 |
| Hybrid Drill Bit Having Increased Service Life App 20150152687 - Nguyen; Don Q. ; et al. | 2015-06-04 |
| System and method for adjusting roller cone profile on hybrid bit Grant 8,978,786 - Nguyen , et al. March 17, 2 | 2015-03-17 |
| Hybrid Drill Bit And Design Method App 20140202771 - ZAHRADNIK; Anton F. ; et al. | 2014-07-24 |
| Hybrid Drill Bit App 20140151131 - Zahradnik; Anton F. ; et al. | 2014-06-05 |
| Hybrid drill bit and design method Grant 8,678,111 - Zahradnik , et al. March 25, 2 | 2014-03-25 |
| Hybrid Drill Bits Having Increased Drilling Efficiency App 20130313021 - Zahradnik; Anton F. ; et al. | 2013-11-28 |
| Hybrid drill bit Grant 8,459,378 - Zahradnik , et al. June 11, 2 | 2013-06-11 |
| Modular hybrid drill bit Grant 8,356,398 - McCormick , et al. January 22, 2 | 2013-01-22 |
| System And Method For Adjusting Roller Cone Profile On Hybrid Bit App 20120111638 - NGUYEN; Don Q. ; et al. | 2012-05-10 |
| Hybrid drill bit with high bearing pin angles Grant 8,141,664 - Zahradnik , et al. March 27, 2 | 2012-03-27 |
| Conformal bearing for rock drill bit Grant 8,028,770 - Dick , et al. October 4, 2 | 2011-10-04 |
| Threaded cone retention system for roller cone bits Grant 7,975,779 - Zahradnik , et al. July 12, 2 | 2011-07-12 |
| Modular Hybrid Drill Bit App 20110120269 - McCORMICK; Ron D. ; et al. | 2011-05-26 |
| Conformal Bearing For Rock Drill Bit App 20110061940 - Dick; Aaron J. ; et al. | 2011-03-17 |
| Earth boring drill bits made from a low-carbon, high-molybdenum alloy Grant 7,905,301 - El Hakam , et al. March 15, 2 | 2011-03-15 |
| Conformal bearing for rock drill bit Grant 7,861,805 - Dick , et al. January 4, 2 | 2011-01-04 |
| Hybrid drill bit and method of drilling Grant 7,845,435 - Zahradnik , et al. December 7, 2 | 2010-12-07 |
| Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit Grant 7,841,426 - Zahradnik , et al. November 30, 2 | 2010-11-30 |
| Hybrid Drill Bit App 20100288561 - Zahradnik; Anton F. ; et al. | 2010-11-18 |
| Dynamically stable hybrid drill bit Grant 7,819,208 - Pessier , et al. October 26, 2 | 2010-10-26 |
| Hybrid Drill Bit With High Bearing Pin Angles App 20100224417 - ZAHRADNIK; Anton F. ; et al. | 2010-09-09 |
| Hybrid Drill Bit With High Pilot-to-journal Diameter Ratio App 20100155146 - Nguyen; Don Q. ; et al. | 2010-06-24 |
| Bearing Seal With Improved Contact Width App 20100147595 - Zahradnik; Anton F. ; et al. | 2010-06-17 |
| Threaded Cone Retention System For Roller Cone Bits App 20100071959 - Zahradnik; Anton F. ; et al. | 2010-03-25 |
| Dynamically Stable Hybrid Drill Bit App 20100018777 - Pessier; Rudolf Carl ; et al. | 2010-01-28 |
| Wide groove roller cone bit Grant 7,628,230 - Pessier , et al. December 8, 2 | 2009-12-08 |
| Conformal Bearing For Rock Drill Bit App 20090283332 - Dick; Aaron J. ; et al. | 2009-11-19 |
| Modular Hybrid Drill Bit App 20090272582 - McCORMICK; Ron D. ; et al. | 2009-11-05 |
| Hybrid Drill Bit And Design Method App 20090126998 - Zahradnik; Anton F. ; et al. | 2009-05-21 |
| Roller Cone Bit Bearing, and Bearing Materials App 20090014217 - Zahradnik; Anton F. ; et al. | 2009-01-15 |
| Earth Boring Drill Bits Made From A Low-Carbon, High-Molybdenum Alloy App 20090008154 - El Hakam; Carmel Z. ; et al. | 2009-01-08 |
| Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit App 20080296068 - Zahradnik; Anton F. ; et al. | 2008-12-04 |
| Hybrid Drill Bit and Method of Drilling App 20080264695 - Zahradnik; Anton F. ; et al. | 2008-10-30 |
| Seal insert ring for roller cone bits Grant 7,392,862 - Zahradnik , et al. July 1, 2 | 2008-07-01 |
| Bearing insert sleeve for roller cone bit Grant 7,387,177 - Zahradnik , et al. June 17, 2 | 2008-06-17 |
| Bearing Insert Sleeve For Roller Cone Bit App 20080093128 - Zahradnik; Anton F. ; et al. | 2008-04-24 |
| Shirttails for reducing damaging effects of cuttings Grant 7,350,600 - Beuershausen , et al. April 1, 2 | 2008-04-01 |
| Seal insert ring for roller cone bits App 20070158114 - Zahradnik; Anton F. ; et al. | 2007-07-12 |
| Shirttails for reducing damaging effects of cuttings Grant 7,182,162 - Beuershausen , et al. February 27, 2 | 2007-02-27 |
| System, method, and apparatus for reducing residual stress in as-welded roller cone bit ball plug welds App 20070014495 - Zahradnik; Anton F. ; et al. | 2007-01-18 |
| Shirttails for reducing damaging effects of cuttings App 20060283638 - Beuershausen; Christopher C. ; et al. | 2006-12-21 |
| Gage surface scraper Grant 7,066,286 - Nguyen , et al. June 27, 2 | 2006-06-27 |
| Wide groove roller cone bit App 20060027401 - Nguyen; Don Q. | 2006-02-09 |
| Shirttails for reducing damaging effects of cuttings App 20060021800 - Beuershausen; Christopher C. ; et al. | 2006-02-02 |
| Gage surface scraper App 20050211474 - Nguyen, Don Q. ; et al. | 2005-09-29 |
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