Inventor · disambiguated record
Padmasiri Daya Seneviratne
Also filed as: SENEVIRATNE PADMASIRI D · SENEVIRATNE PADMASIRI DAYA
9 granted patents·544 citations·filing 1980–2011
91Inventor score
Top patents by PatentIndex Score
9 records- 0194US6276450B1Apparatus and method for rapid replacement of upper blowout preventersVARCO INT·Filed 1999·Granted Aug 21, 2001·211 cites·20 claims
- 0293US7287544B2Triple valve blow out preventerVARCO INT·Filed 2005·Granted Oct 30, 2007·33 cites·20 claims
- 0393US4320915AInternal elevatorVARCO INT·Filed 1980·Granted Mar 23, 1982·157 cites·16 claims
- 0488US6725949B2Washpipe assemblyVARCO INT·Filed 2002·Granted Apr 27, 2004·80 cites·34 claims
- 0581US8752653B2Dual ball upper internal blow out preventer valveSENEVIRATNE PADMASIRI DAYA·Filed 2011·Granted Jun 17, 2014·11 cites·22 claims
- 0673US4367056AMarine platform jacket jackVARCO INT·Filed 1981·Granted Jan 4, 1983·24 cites·18 claims
- 0751US6994174B2Washpipe assemblyVARCO INT·Filed 2004·Granted Feb 7, 2006·11 cites·28 claims
- 0847US7121295B2Internal blow out preventer ball and seatVARCO INT·Filed 2004·Granted Oct 17, 2006·9 cites·16 claims
- 0934US4423645APipe spinnerVARCO INT·Filed 1981·Granted Jan 3, 1984·8 cites·32 claims
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