Inventor · disambiguated record
William N. Schoeffler
Also filed as: SCHOEFFLER WILLIAM N
21 granted patents·993 citations·filing 1976–2001
97Inventor score
Files withSCHOEFFLER WILLIAM N9PETRO DESIGN INC2PIONEER FISHING AND RENTAL TOO2QUANTUM DRILLING MOTORS INC2TEAM CONSTRUCTION AND FABRICAT2
Top patents by PatentIndex Score
21 records- 0196US6364034B1Directional drilling apparatusFiled 2000·Granted Apr 2, 2002·264 cites·8 claims
- 0291US4895214ADirectional drilling toolSCHOEFFLER WILLIAM N·Filed 1988·Granted Jan 23, 1990·111 cites·8 claims
- 0386US4811798ADrilling motor deviation toolTEAM CONSTRUCTION AND FABRICAT·Filed 1986·Granted Mar 14, 1989·83 cites·21 claims
- 0486US4597454AControllable downhole directional drilling tool and methodSCHOEFFLER WILLIAM N·Filed 1984·Granted Jul 1, 1986·68 cites·9 claims
- 0585US4302022AHigh-low trailerSCHOEFFLER WILLIAM N·Filed 1979·Granted Nov 24, 1981·37 cites·6 claims
- 0682US4655299AAngle deviation toolPETRO DESIGN INC·Filed 1985·Granted Apr 7, 1987·69 cites·10 claims
- 0782US4655289ARemote control selector valvePETRO DESIGN INC·Filed 1985·Granted Apr 7, 1987·68 cites·9 claims
- 0879US4615399AValved jet device for well drillsPIONEER FISHING AND RENTAL TOO·Filed 1985·Granted Oct 7, 1986·63 cites·19 claims
- 0964US5259467ADirectional drilling toolSCHOEFFLER WILLIAM N·Filed 1992·Granted Nov 9, 1993·42 cites·10 claims
- 1063US4577614AAdvanced quick ball release subSCHOEFFLER WILLIAM N·Filed 1983·Granted Mar 25, 1986·29 cites·4 claims
- 1156US6488092B1By-pass valveFiled 2001·Granted Dec 3, 2002·19 cites·8 claims
- 1256US4807709AFluid Powered drilling jarPIONEER FISHING AND RENTAL TOO·Filed 1986·Granted Feb 28, 1989·27 cites·20 claims
- 1354US4715453ADrilling deviation control toolTEAM CONSTRUCTION AND FABRICAT·Filed 1986·Granted Dec 29, 1987·24 cites·17 claims
- 1454US4030745ATool retriever for wellsSCHOEFFLER WILLIAM N·Filed 1976·Granted Jun 21, 1977·20 cites·8 claims
- 1552US4408670AImpact cam subassembly for drillsSCHOEFFLER WILLIAM N·Filed 1981·Granted Oct 11, 1983·19 cites·7 claims
- 1651US6167969B1Remote control valveQUANTUM DRILLING MOTORS INC·Filed 1998·Granted Jan 2, 2001·15 cites·3 claims
- 1741US6457541B1Surface controlled by-pass valveFiled 2000·Granted Oct 1, 2002·5 cites·11 claims
- 1838US6318481B1Drill string deflector subQUANTUM DRILLING MOTORS INC·Filed 1998·Granted Nov 20, 2001·17 cites·12 claims
- 1933US4715253ALine wrap power tongsTEAM ENGINEERING AND MANUFACTU·Filed 1986·Granted Dec 29, 1987·8 cites·26 claims
- 2031US4491148AAutomatic choke valveSCHOEFFLER WILLIAM N·Filed 1983·Granted Jan 1, 1985·2 cites·23 claims
- 2131US4427120AFolding pole truckbedSCHOEFFLER WILLIAM N·Filed 1981·Granted Jan 24, 1984·3 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →