Inventor · disambiguated record
Edward Michael Tollefsen
Also filed as: TOLLEFSEN EDWARD M · TOLLEFSEN EDWARD MICHAEL
4 granted patents·3 pending applications·44 citations·filing 1994–2021
74Inventor score
Top patents by PatentIndex Score
7 records- 0172US10598809B2Downhole electromagnetic sensing techniquesSCHLUMBERGER TECHNOLOGY CORP·Filed 2017·Granted Mar 24, 2020·1 cites·11 claims
- 0271US9228430B2Methods for evaluating cuttings density while drillingRASMUS JOHN·Filed 2012·Granted Jan 5, 2016·5 cites·24 claims
- 0364US2021199836A1Downhole electromagnetic sensing techniquesSCHLUMBERGER TECHNOLOGY CORP·Filed 2021·Application pending·0 cites
- 0461US5477921AMethod and system for logging a well while fishing for the logging toolSCHLUMBERGER TECHNOLOGY CORP·Filed 1994·Granted Dec 26, 1995·34 cites·19 claims
- 0560US8727035B2System and method for managing temperature in a wellboreTOLLEFSEN EDWARD M·Filed 2011·Granted May 20, 2014·4 cites·20 claims
- 0636US2018045559A1Seismic investigations using seismic sensorSCHLUMBERGER TECHNOLOGY CORP·Filed 2016·Application pending·0 cites
- 0736US2013048380A1Wellbore interval densitiesRASMUS JOHN·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →