Inventor · disambiguated record
Coy M. Fielder
Also filed as: FIELDER COY · FIELDER COY M · FIELDER COY MICHAEL
20 granted patents·1,783 citations·filing 1976–2003
97Inventor score
Files withDIAMOND PRODUCTS INTERNATIONAL12CHRISTENSEN INC4BAROID TECHNOLOGY INC2REEDEYCALOG L P1REEDHYCALOG L P1
Top patents by PatentIndex Score
20 records- 0197US4351401AEarth-boring drill bitsCHRISTENSEN INC·Filed 1980·Granted Sep 28, 1982·216 cites·6 claims
- 0296US5558170AMethod and apparatus for improving drill bit stabilityBAROID TECHNOLOGY INC·Filed 1994·Granted Sep 24, 1996·222 cites·8 claims
- 0394US5678644ABi-center and bit method for enhancing stabilityDIAMOND PRODUCTS INTERNATIONAL·Filed 1995·Granted Oct 21, 1997·202 cites·27 claims
- 0492US4073354AEarth-boring drill bitsCHRISTENSEN INC·Filed 1976·Granted Feb 14, 1978·106 cites·32 claims
- 0591US6340064B2Bi-center bit adapted to drill casing shoeDIAMOND PRODUCTS INTERNATIONAL·Filed 1999·Granted Jan 22, 2002·150 cites·35 claims
- 0689US6142248AReduced erosion nozzle system and method for the use of drill bits to reduce erosionDIAMOND PRODUCTS INTERNATIONAL·Filed 1998·Granted Nov 7, 2000·91 cites·18 claims
- 0788US4244432AEarth-boring drill bitsCHRISTENSEN INC·Filed 1978·Granted Jan 13, 1981·71 cites·15 claims
- 0885US5992548ABi-center bit with oppositely disposed cutting surfacesDIAMOND PRODUCTS INTERNATIONAL·Filed 1997·Granted Nov 30, 1999·133 cites·21 claims
- 0984US5979577AStabilizing drill bit with improved cutting elementsDIAMOND PRODUCTS INTERNATIONAL·Filed 1998·Granted Nov 9, 1999·89 cites·32 claims
- 1083US5449048ADrill bit having chip breaker polycrystalline diamond compact and hard metal insert at gauge surfaceBAROID TECHNOLOGY INC·Filed 1994·Granted Sep 12, 1995·81 cites·5 claims
- 1180US5803196AStabilizing drill bitDIAMOND PRODUCTS INTERNATIONAL·Filed 1996·Granted Sep 8, 1998·77 cites·27 claims
- 1274US6991046B2Expandable eccentric reamer and method of use in drillingREEDHYCALOG L P·Filed 2003·Granted Jan 31, 2006·47 cites·24 claims
- 1372US6401845B1Cutting element with stress reductionDIAMOND PRODUCTS INTERNATIONAL·Filed 2000·Granted Jun 11, 2002·40 cites·24 claims
- 1471US6629476B2Bi-center bit adapted to drill casing shoeDIAMOND PRODUCTS INTERNATIONAL·Filed 2001·Granted Oct 7, 2003·35 cites·14 claims
- 1570US6068072ACutting elementDIAMOND PRODUCTS INTERNATIONAL·Filed 1998·Granted May 30, 2000·57 cites·21 claims
- 1666US6315067B1Cutting element with stress reductionDIAMOND PRODUCTS INTERNATIONAL·Filed 1999·Granted Nov 13, 2001·50 cites·11 claims
- 1765US6026919ACutting element with stress reductionDIAMOND PRODUCTS INTERNATIONAL·Filed 1998·Granted Feb 22, 2000·48 cites·33 claims
- 1858US6412579B2Two stage drill bitDIAMOND PRODUCTS INTERNATIONAL·Filed 1999·Granted Jul 2, 2002·36 cites·12 claims
- 1950US4336850AInternal fluid screen to prevent nozzle and port pluggingCHRISTENSEN INC·Filed 1980·Granted Jun 29, 1982·17 cites·7 claims
- 2048US6913098B2Sub-reamer for bi-center type toolsREEDEYCALOG L P·Filed 2002·Granted Jul 5, 2005·15 cites·11 claims
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