Inventor · disambiguated record
Denzal Wayne Van Winkle
Also filed as: VAN WINKLE DENZAL W · VAN WINKLE DENZAL WAYNE
19 granted patents·2 pending applications·667 citations·filing 1979–2013
96Inventor score
Files withWINKLE DENZAL W VAN6TUBOSCOPE I P INC4VAN WINKLE DENZAL WAYNE4VARCO I P2DREXEL OILFIELD SERVICES INC1
Top patents by PatentIndex Score
21 records- 0195US7523644B2Method and apparatus for verifying the integrity of a joint sealVARCO I P·Filed 2005·Granted Apr 28, 2009·38 cites·5 claims
- 0293US8770274B2Shear seal blowout preventerNAT OILWELL VARCO LP·Filed 2013·Granted Jul 8, 2014·16 cites·20 claims
- 0392US7181808B1Buckle or claspVAN WINKLE DENZAL WAYNE·Filed 2006·Granted Feb 27, 2007·31 cites·18 claims
- 0490US4646825ABlowout preventer, shear ram, shear blade and seal thereforWINKLE DENZAL W VAN·Filed 1986·Granted Mar 3, 1987·99 cites·3 claims
- 0587US8567490B2Shear seal blowout preventerVAN WINKLE DENZAL WAYNE·Filed 2009·Granted Oct 29, 2013·28 cites·15 claims
- 0684US4220206AQuick opening closure arrangement for well completionsWINKLE DENZAL W VAN·Filed 1979·Granted Sep 2, 1980·53 cites·13 claims
- 0781US9022126B2Wellsite equipment replacement system and method for using sameMELANCON JEFFREY THOMAS·Filed 2010·Granted May 5, 2015·9 cites·24 claims
- 0880US4943031ABlowout preventerDREXEL OILFIELD SERVICES INC·Filed 1989·Granted Jul 24, 1990·38 cites·5 claims
- 0973US4690033ASelf actuating locking and unlocking arrangement and method for reciprocating piston type actuatorsWINKLE DENZAL W VAN·Filed 1985·Granted Sep 1, 1987·22 cites·4 claims
- 1072US4392633AValve structure having movable seat meansWINKLE DENZAL W VAN·Filed 1979·Granted Jul 12, 1983·32 cites·13 claims
- 1170US4690411ABonded mechanically inner connected seal arrangement for a blowout preventerWINKLE DENZAL W VAN·Filed 1985·Granted Sep 1, 1987·41 cites·6 claims
- 1269US6164619ABi-directional sealing ramTUBOSCOPE I P INC·Filed 1999·Granted Dec 26, 2000·56 cites·9 claims
- 1367US6006647AActuator with free-floating piston for a blowout preventer and the likeTUBOSCOPE I P INC·Filed 1998·Granted Dec 28, 1999·52 cites·13 claims
- 1466US6012528AMethod and apparatus for replacing a packer elementTUBOSCOPE I P INC·Filed 1998·Granted Jan 11, 2000·48 cites·17 claims
- 1564US8875798B2Wellsite replacement system and method for using sameVAN WINKLE DENZAL WAYNE·Filed 2010·Granted Nov 4, 2014·2 cites·18 claims
- 1664US4416441ABlowout preventerWINKLE DENZAL W VAN·Filed 1982·Granted Nov 22, 1983·28 cites·6 claims
- 1759US6742597B2Safety check valve for coiled tubingVARCO I P·Filed 2002·Granted Jun 1, 2004·22 cites·11 claims
- 1855US6113061AMethod and apparatus for replacing a packer elementFiled 1999·Granted Sep 5, 2000·28 cites·7 claims
- 1952US5961094AMethod and apparatus for replacing a packer elementTUBOSCOPE I P INC·Filed 1998·Granted Oct 5, 1999·24 cites·13 claims
- 2038US2012055679A1System and Method for Rescuing a Malfunctioning Subsea Blowout PreventerVAN WINKLE DENZAL WAYNE·Filed 2010·Application pending·0 cites
- 2135US2004124380A1Articulated slip ram for tapered coiled tubingFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →