Inventor · disambiguated record
Michael B. Vinzant
Also filed as: VINZANT MICHAEL B · VINZANT MICHAEL BURL
9 granted patents·412 citations·filing 1981–2010
91Inventor score
Technology areasE21B
Top patents by PatentIndex Score
9 records- 0186US7798229B2Dual flapper safety valveHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Sep 21, 2010·25 cites·21 claims
- 0286US4448216ASubsurface safety valveOTIS ENG CO·Filed 1982·Granted May 15, 1984·83 cites·14 claims
- 0384US4452311AEqualizing means for well toolsOTIS ENG CO·Filed 1982·Granted Jun 5, 1984·85 cites·19 claims
- 0482US4834183ASurface controlled subsurface safety valveOTIS ENG CO·Filed 1988·Granted May 30, 1989·66 cites·19 claims
- 0582US4723606ASurface controlled subsurface safety valveOTIS ENG CO·Filed 1987·Granted Feb 9, 1988·64 cites·22 claims
- 0671US8047294B2Dual flapper safety valveHALLIBURTON ENERGY SERV INC·Filed 2010·Granted Nov 1, 2011·3 cites·6 claims
- 0764US6302210B1Safety valve utilizing an isolation valve and method of using the sameHALLIBURTON ENERGY SERV INC·Filed 1997·Granted Oct 16, 2001·51 cites·18 claims
- 0854US4469179ASafety systemOTIS ENG CO·Filed 1981·Granted Sep 4, 1984·20 cites·3 claims
- 0945US4461353AWell safety valveOTIS ENG CO·Filed 1982·Granted Jul 24, 1984·15 cites·16 claims
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