Inventor · disambiguated record
John H. Yonker
Also filed as: YONKER JOHN H
21 granted patents·1 pending application·898 citations·filing 1974–2002
96Inventor score
Top patents by PatentIndex Score
22 records- 0196US5492173APlug or lock for use in oil field tubular members and an operating system thereforHALLIBURTON CO·Filed 1993·Granted Feb 20, 1996·234 cites·6 claims
- 0293US4730677AMethod and system for maintenance and servicing of subsea wellsOTIS ENG CO·Filed 1986·Granted Mar 15, 1988·165 cites·28 claims
- 0391US4494608AWell injection systemOTIS ENG CO·Filed 1982·Granted Jan 22, 1985·58 cites·23 claims
- 0481US5195585AWireline retrievable jet cleaning toolOTIS ENG CO·Filed 1991·Granted Mar 23, 1993·81 cites·19 claims
- 0578US4273186AWell safety valve systemOTIS ENG CO·Filed 1978·Granted Jun 16, 1981·40 cites·21 claims
- 0673US4227573AReinforced seal unit for pumpdown pistons or well swabsOTIS ENG CO·Filed 1978·Granted Oct 14, 1980·32 cites·15 claims
- 0766US5271461ACoiled tubing deployed inflatable stimulation toolHALLIBURTON CO·Filed 1992·Granted Dec 21, 1993·46 cites·39 claims
- 0866US4026363AApparatus and method for performing a desired operation at a specified location in a wellOTIS ENG CO·Filed 1975·Granted May 31, 1977·28 cites·5 claims
- 0960US4294315ALanding nippleOTIS ENG CO·Filed 1978·Granted Oct 13, 1981·22 cites·12 claims
- 1054US4513764AValveOTIS ENG CO·Filed 1983·Granted Apr 30, 1985·19 cites·8 claims
- 1153US5832998ACoiled tubing deployed inflatable stimulation toolHALLIBURTON CO·Filed 1995·Granted Nov 10, 1998·36 cites·32 claims
- 1252US3957119APump down methodYONKER JOHN H·Filed 1974·Granted May 18, 1976·16 cites·7 claims
- 1351US4039026AKickover toolOTIS ENG CO·Filed 1976·Granted Aug 2, 1977·15 cites·11 claims
- 1450US5163515APumpdown toolstring operations in horizontal or high-deviation oil or gas wellsNORSKE STATS OLJESELSKAP·Filed 1991·Granted Nov 17, 1992·25 cites·11 claims
- 1547US5284208AProduction logging system using through flow line toolsHALLIBURTON CO·Filed 1991·Granted Feb 8, 1994·24 cites·12 claims
- 1646US4432416AWell flow control apparatusOTIS ENG CO·Filed 1982·Granted Feb 21, 1984·14 cites·20 claims
- 1744US4428557ASingle line deep depth safety valveOTIS ENG CO·Filed 1982·Granted Jan 31, 1984·13 cites·4 claims
- 1844US4103740AWell tool with a pawlOTIS ENG CO·Filed 1977·Granted Aug 1, 1978·11 cites·12 claims
- 1936US4418756AMethod and apparatus for performing operations in well tubingOTIS ENG CO·Filed 1981·Granted Dec 6, 1983·7 cites·13 claims
- 2034US4530485AValveYONKER JOHN H·Filed 1984·Granted Jul 23, 1985·10 cites·3 claims
- 2134US2003234111A1Internal support apparatus for downhole tubular structures and method of useFiled 2002·Application pending·0 cites
- 2230US4039027ACircumferential centralizerOTIS ENG CO·Filed 1976·Granted Aug 2, 1977·2 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →