Inventor · disambiguated record
Marcel Obrejanu
Also filed as: OBREJANU MARCEL
18 granted patents·304 citations·filing 1990–2016
94Inventor score
Files withOBREJANU MARCEL4STAR OIL TOOLS INC4PREMIUM ARTIFICIAL LIFT SYSTEMS LTD3FLUIDSTREAM ENERGY INC2MARALDA OILWELL TECHNOLOGY LTD1
Top patents by PatentIndex Score
18 records- 0185US8282365B2Pump for pumping fluid in a wellbore using a fluid displacer meansOBREJANU MARCEL·Filed 2010·Granted Oct 9, 2012·4 cites·10 claims
- 0282US7559361B2Downhole force generatorSTAR OIL TOOLS INC·Filed 2005·Granted Jul 14, 2009·21 cites·15 claims
- 0380US7883570B2Spiral gas separatorSTAR OIL TOOLS INC·Filed 2007·Granted Feb 8, 2011·9 cites·22 claims
- 0473US5228507AWireline hydraulic retrieving toolOBREJANU MARCEL·Filed 1991·Granted Jul 20, 1993·60 cites·4 claims
- 0572US5902378AContinuous flow downhole gas separator for processing cavity pumpsFiled 1997·Granted May 11, 1999·62 cites·17 claims
- 0670US10443369B2Gas separators and related methodsPREMIUM ARTIFICIAL LIFT SYSTEMS LTD·Filed 2016·Granted Oct 15, 2019·1 cites·22 claims
- 0769US7828052B2Downhole force generatorSTAR OIL TOOLS INC·Filed 2006·Granted Nov 9, 2010·10 cites·11 claims
- 0867US9932778B2Downhole tubing swivels and related methodsPREMIUM ARTIFICIAL LIFT SYSTEMS LTD·Filed 2014·Granted Apr 3, 2018·3 cites·22 claims
- 0967US7900708B2Multiple-block downhole anchors and anchor assembliesOBREJANU MARCEL·Filed 2008·Granted Mar 8, 2011·10 cites·19 claims
- 1067US5398753AWireline hydraulic retrieving tool and downhole power generating assemblyFiled 1993·Granted Mar 21, 1995·47 cites·9 claims
- 1165US8376053B2Fluid flow conduit, method and usePREMIUM ARTIFICIAL LIFT SYSTEMS LTD·Filed 2007·Granted Feb 19, 2013·9 cites·16 claims
- 1264US7806669B2Pump for pumping fluidsSTAR OIL TOOLS INC·Filed 2005·Granted Oct 5, 2010·2 cites·9 claims
- 1363US9366104B2Downhole tubing rotators and related methodsPREMIUM ARTIFICIAL LIFE SYSTEMS LTD·Filed 2013·Granted Jun 14, 2016·3 cites·22 claims
- 1460US8069925B2Downhole resettable clutch swivelOBREJANU MARCEL·Filed 2007·Granted Dec 6, 2011·6 cites·19 claims
- 1559US5275239AAnchoring device for tubing stringVALMAR CONSULTING LTD·Filed 1992·Granted Jan 4, 1994·38 cites·9 claims
- 1649US10221664B2Method and system for optimizing well productionFLUIDSTREAM ENERGY INC·Filed 2015·Granted Mar 5, 2019·1 cites·8 claims
- 1742US11098709B2Method and apparatus for pumping fluidFLUIDSTREAM ENERGY INC·Filed 2014·Granted Aug 24, 2021·0 cites·19 claims
- 1835US4995462ADewaxing control apparatus for oil wellMARALDA OILWELL TECHNOLOGY LTD·Filed 1990·Granted Feb 26, 1991·18 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Marcel Obrejanu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →