Fielder; Coy M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Fielder; Coy M..The latest application filed is for "expandable eccentric reamer and method of use in drilling".
- Fielder; Coy M. - Cypress TX
- Fielder, Coy M. - US
- Fielder; Coy M. - Houston TX
- Fielder; Coy M. - Salt Lake City UT
- Fielder; Coy M. - Granger UT
| Patent | Date |
|---|---|
| Expandable eccentric reamer and method of use in drilling Grant 6,991,046 - Fielder , et al. January 31, 2 | 2006-01-31 |
| Sub-reamer for bi-center type tools Grant 6,913,098 - Fielder , et al. July 5, 2 | 2005-07-05 |
| Expandable eccentric reamer and method of use in drilling App 20050092526 - Fielder, Coy M. ; et al. | 2005-05-05 |
| Sub-reamer for bi-center type tools App 20040099448 - Fielder, Coy M. ; et al. | 2004-05-27 |
| Bi-center bit adapted to drill casing shoe Grant 6,629,476 - Fielder , et al. October 7, 2 | 2003-10-07 |
| Bi-center bit adapted to drill casing shoe App 20020092378 - Fielder, Coy M. ; et al. | 2002-07-18 |
| Two stage drill bit Grant 6,412,579 - Fielder July 2, 2 | 2002-07-02 |
| Cutting element with stress reduction Grant 6,401,845 - Fielder June 11, 2 | 2002-06-11 |
| Bi-center bit adapted to drill casing shoe Grant 6,340,064 - Fielder , et al. January 22, 2 | 2002-01-22 |
| Bi-center Bit Adapted To Drill Casing Shoe App 20010045306 - FIELDER, COY M. ; et al. | 2001-11-29 |
| Two Stage Drill Bit App 20010045305 - FIELDER, COY M. | 2001-11-29 |
| Cutting element Grant 6,068,072 - Besson , et al. May 30, 2 | 2000-05-30 |
| Cutting element with stress reduction Grant 6,026,919 - Thigpen , et al. February 22, 2 | 2000-02-22 |
| Bi-center bit with oppositely disposed cutting surfaces Grant 5,992,548 - Silva , et al. November 30, 1 | 1999-11-30 |
| Stabilizing drill bit with improved cutting elements Grant 5,979,577 - Fielder November 9, 1 | 1999-11-09 |
| Stabilizing drill bit Grant 5,803,196 - Fielder September 8, 1 | 1998-09-08 |
| Method and apparatus for improving drill bit stability Grant 5,558,170 - Thigpen , et al. September 24, 1 | 1996-09-24 |
| Drill bit having chip breaker polycrystalline diamond compact and hard metal insert at gauge surface Grant 5,449,048 - Thigpen , et al. September 12, 1 | 1995-09-12 |
| Earth-boring drill bits Grant 4,351,401 - Fielder September 28, 1 | 1982-09-28 |
| Internal fluid screen to prevent nozzle and port plugging Grant 4,336,850 - Fielder June 29, 1 | 1982-06-29 |
| Earth-boring drill bits Grant 4,244,432 - Rowley , et al. January 13, 1 | 1981-01-13 |
| Earth-boring drill bits Grant 4,073,354 - Rowley , et al. February 14, 1 | 1978-02-14 |
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