Inventor · disambiguated record
Per-Erik Berger
Also filed as: BERGER PER · BERGER PER ERIK
15 granted patents·1,774 citations·filing 1984–2022
95Inventor score
Top patents by PatentIndex Score
15 records- 0198US6443228B1Method of utilizing flowable devices in wellboresBAKER HUGHES INC·Filed 2000·Granted Sep 3, 2002·335 cites·21 claims
- 0297US5803186AFormation isolation and testing apparatus and methodBAKER HUGHES INC·Filed 1996·Granted Sep 8, 1998·328 cites·29 claims
- 0396US6581455B1Modified formation testing apparatus with borehole grippers and method of formation testingBAKER HUGHES INC·Filed 2000·Granted Jun 24, 2003·193 cites·19 claims
- 0496US6157893AModified formation testing apparatus and methodBAKER HUGHES INC·Filed 1999·Granted Dec 5, 2000·262 cites·19 claims
- 0594US6585045B2Formation testing while drilling apparatus with axially and spirally mounted portsBAKER HUGHES INC·Filed 2001·Granted Jul 1, 2003·153 cites·17 claims
- 0692US6047239AFormation testing apparatus and methodBAKER HUGHES INC·Filed 1998·Granted Apr 4, 2000·176 cites·27 claims
- 0791US6745833B2Method of utilizing flowable devices in wellboresBAKER HUGHES INC·Filed 2002·Granted Jun 8, 2004·85 cites·59 claims
- 0890US6427530B1Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurementBAKER HUGHES INC·Filed 2000·Granted Aug 6, 2002·102 cites·26 claims
- 0989US11131147B1Core drilling apparatus and method for converting between a core drilling assembly and a full-diameter drilling assemblyCOREALL AS·Filed 2020·Granted Sep 28, 2021·19 cites·16 claims
- 1088US6976535B2Method of utilizing flowable devices in wellboresBAKER HUGHES INC·Filed 2004·Granted Dec 20, 2005·65 cites·11 claims
- 1170US7063174B2Method for reservoir navigation using formation pressure testing measurement while drillingBAKER HUGHES INC·Filed 2003·Granted Jun 20, 2006·37 cites·32 claims
- 1264US11891858B2Method and apparatus for alternating between coring and drilling without tripping operationsCOREALL AS·Filed 2019·Granted Feb 6, 2024·1 cites·15 claims
- 1359US4583617ARescue basketBERGER PER·Filed 1984·Granted Apr 22, 1986·17 cites·2 claims
- 1458US9879493B2Intelligent coring systemCOREALL AS·Filed 2013·Granted Jan 30, 2018·1 cites·27 claims
- 1544US12442296B2Intelligent well testing systemTESTALL AS·Filed 2022·Granted Oct 14, 2025·0 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →