Inventor · disambiguated record
Robert H. Wittman
Also filed as: WITTMAN ROBERT H · WITTMAN ROBERT HENRY
10 granted patents·2 pending applications·449 citations·filing 1974–2023
92Inventor score
Files withHUGHES TOOL CO3EXXON RESEARCH ENGINEERING CO2SHELL OIL CO2FLOTEK IND INC1HUGHES UNDERSEA COUPLING INC1
Top patents by PatentIndex Score
12 records- 0192US4465104APressure energized pipeline plugHUGHES TOOL CO·Filed 1983·Granted Aug 14, 1984·92 cites·13 claims
- 0291US4422477APressure energized pipeline plugHUGHES TOOL CO·Filed 1981·Granted Dec 27, 1983·87 cites·14 claims
- 0390US10288065B1Mud motor coupling systemSMID JOHN P·Filed 2016·Granted May 14, 2019·18 cites·10 claims
- 0487US4332277APipeline pigging plugHUGHES UNDERSEA COUPLING INC·Filed 1980·Granted Jun 1, 1982·75 cites·6 claims
- 0575US4477105ACollet actuated ball and socket connectorHUGHES TOOL CO·Filed 1984·Granted Oct 16, 1984·40 cites·18 claims
- 0674US6315497B1Joint for applying current across a pipe-in-pipe systemSHELL OIL CO·Filed 1997·Granted Nov 13, 2001·71 cites·15 claims
- 0773US4078832APipe coupling with improved seal meansHYDROTECH INT INC·Filed 1976·Granted Mar 14, 1978·33 cites·4 claims
- 0856US2023341288A1Electrochemical kill switch assembly and method of use thereofWHITE KNIGHT CONTROLS LLC·Filed 2023·Application pending·0 cites
- 0953US6467545B1Monolithic isolation stress jointSHELL OIL CO·Filed 2000·Granted Oct 22, 2002·23 cites·20 claims
- 1039US4046301AProcess for explosively joining two pipe sectionsEXXON RESEARCH ENGINEERING CO·Filed 1976·Granted Sep 6, 1977·5 cites·3 claims
- 1137US3987952AApparatus for explosive welding of hollow cylinders such as pipeEXXON RESEARCH ENGINEERING CO·Filed 1974·Granted Oct 26, 1976·5 cites·23 claims
- 1237US2010276138A1Low Friction CentralizerFLOTEK IND INC·Filed 2010·Application pending·0 cites
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