Inventor · disambiguated record
William J. Mcdonald
Also filed as: MCDONALD JR WILLIAM J · MCDONALD JR WILLIAM JESSE · MCDONALD WILLIAM J
25 granted patents·1 pending application·1,391 citations·filing 1977–2007
97Inventor score
Files withMAURER ENG9GAS RES INST5DEXTER MAGNETIC TECHNOLOGIES I3SLIMDRIL INTERNATIONAL INC2TELE DRILL INC2
Top patents by PatentIndex Score
26 records- 0195US5467083AWireless downhole electromagnetic data transmission system and methodELECTRIC POWER RES INST·Filed 1993·Granted Nov 14, 1995·239 cites·41 claims
- 0293US4694913AGuided earth boring toolGAS RES INST·Filed 1986·Granted Sep 22, 1987·111 cites·26 claims
- 0392US4496174AInsulated drill collar gap sub assembly for a toroidal coupled telemetry systemTELE DRILL INC·Filed 1981·Granted Jan 29, 1985·160 cites·13 claims
- 0489US7549467B2Wellbore motor having magnetic gear driveDEXTER MAGNETIC TECHNOLOGIES I·Filed 2007·Granted Jun 23, 2009·46 cites·49 claims
- 0587US7481283B2Wellbore motor having magnetic gear driveDEXTER MAGNETIC TECHNOLOGIES I·Filed 2006·Granted Jan 27, 2009·18 cites·21 claims
- 0686US6530437B2Multi-gradient drilling method and systemMAURER TECHNOLOGY INC·Filed 2001·Granted Mar 11, 2003·120 cites·86 claims
- 0780US4991668AControlled directional drilling system and methodMAURER ENG·Filed 1989·Granted Feb 12, 1991·60 cites·38 claims
- 0878US4665997APressure balanced bearing assembly for downhole motorsMAURER ENG·Filed 1985·Granted May 19, 1987·33 cites·33 claims
- 0976US4246976ADown hole drilling motor with pressure balanced bearing sealsMAURER ENG·Filed 1978·Granted Jan 27, 1981·37 cites·14 claims
- 1075US7487829B2Wellbore valve having linear magnetically geared valve actuatorDEXTER MAGNETIC TECHNOLOGIES I·Filed 2007·Granted Feb 10, 2009·17 cites·20 claims
- 1175US4632191ASteering system for percussion boring toolsGAS RES INST·Filed 1985·Granted Dec 30, 1986·49 cites·51 claims
- 1274US4621698APercussion boring toolGAS RES INST·Filed 1985·Granted Nov 11, 1986·46 cites·16 claims
- 1374US4114704ADown hole well drilling tool with reversible thrust bearingsMAURER ENG·Filed 1977·Granted Sep 19, 1978·37 cites·12 claims
- 1473US4936397AEarth drilling apparatus with control valveSLIMDRIL INTERNATIONAL INC·Filed 1989·Granted Jun 26, 1990·46 cites·16 claims
- 1573US4387372APoint gap assembly for a toroidal coupled telemetry systemTELE DRILL INC·Filed 1981·Granted Jun 7, 1983·42 cites·4 claims
- 1672US5396966ASteering sub for flexible drillingSLIMDRIL INTERNATIONAL INC·Filed 1994·Granted Mar 14, 1995·59 cites·28 claims
- 1772US4858704AGuided earth boring toolGAS RES INST·Filed 1987·Granted Aug 22, 1989·38 cites·9 claims
- 1867US6457538B1Advanced coring apparatus and methodMAURER ENG·Filed 2001·Granted Oct 1, 2002·35 cites·25 claims
- 1967US6313755B1Downhole buried utility sensing and data transmission system and methodMAURER ENG·Filed 1999·Granted Nov 6, 2001·57 cites·12 claims
- 2064US4880065AAir motor operated rotary earth drilling toolGAS RES INST·Filed 1988·Granted Nov 14, 1989·35 cites·29 claims
- 2164US4114702AWell drilling tool with lubricant level indicatorMAURER ENG·Filed 1977·Granted Sep 19, 1978·25 cites·11 claims
- 2255US5022471ADeviated wellbore drilling system and apparatusMAURER ENG·Filed 1990·Granted Jun 11, 1991·29 cites·12 claims
- 2350US4828053ADeviated wellbore drilling system and apparatusMAURER ENG·Filed 1988·Granted May 9, 1989·20 cites·16 claims
- 2449US4789032AOrienting and circulating subREHM WILLIAM A·Filed 1987·Granted Dec 6, 1988·20 cites·24 claims
- 2545US5277055AImpact and impact-rotary tool testing apparatus using rotary speed and impact energyCONS EDISON CO·Filed 1991·Granted Jan 11, 1994·12 cites·15 claims
- 2636US2005139393A1Turbine generator system and methodNOBLE DRILLING CORP·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →