Assignee
WINKLE DENZAL W VAN
6 granted patents·275 citations·filing 1979–1986
Top patents by PatentIndex Score
6 records- 0190US4646825ABlowout preventer, shear ram, shear blade and seal thereforWINKLE DENZAL W VAN·Filed 1986·Granted Mar 3, 1987·99 cites·3 claims
- 0284US4220206AQuick opening closure arrangement for well completionsWINKLE DENZAL W VAN·Filed 1979·Granted Sep 2, 1980·53 cites·13 claims
- 0373US4690033ASelf 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
- 0472US4392633AValve structure having movable seat meansWINKLE DENZAL W VAN·Filed 1979·Granted Jul 12, 1983·32 cites·13 claims
- 0570US4690411ABonded mechanically inner connected seal arrangement for a blowout preventerWINKLE DENZAL W VAN·Filed 1985·Granted Sep 1, 1987·41 cites·6 claims
- 0664US4416441ABlowout preventerWINKLE DENZAL W VAN·Filed 1982·Granted Nov 22, 1983·28 cites·6 claims
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