Inventor

Per-Erik Berger

Inventor

Vestre Amoy, NO

Overview

1986–2021

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 13 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary

E21BEarth or rock drilling92%

B63CLaunching, hauling-out, or dry-docking of vessels8%

PatentTitleYear

11,131,147Core drilling apparatus and method for converting between a core drilling assembly and a full-diameter drilling assembly2021 9,879,493'Intelligent coring system'2018 7,063,174'Method for reservoir navigation using formation pressure testing measurement while drilling'2006 6,976,535'Method of utilizing flowable devices in wellbores'2005 6,745,833'Method of utilizing flowable devices in wellbores'2004 6,585,045'Formation testing while drilling apparatus with axially and spirally mounted ports'2003 6,581,455'Modified formation testing apparatus with borehole grippers and method of formation testing'2003 6,443,228'Method of utilizing flowable devices in wellbores'2002 6,427,530'Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurement'2002 6,157,893'Modified formation testing apparatus and method'2000 6,047,239'Formation testing apparatus and method'2000 5,803,186'Formation isolation and testing apparatus and method'1998 4,583,617'Rescue basket'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Patents assigned to BERGER PER (1)· patent assignee history

1998–2006Patents assigned to BAKER HUGHES INC (10)· patent assignee history

1998–2006Based in Vestre Amoy, NO· patent location history

2002Based in Hegreberg, NO· patent location history

2003Based in Sokn, NO· patent location history

2018–2021Patents assigned to COREALL AS (2)· patent assignee history

2018Based in Kolltveit, NO· patent location history

2021Based in Skien, NO· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAKER HUGHES INC	10	1998–2006
COREALL AS	2	2018–2021
BERGER PERself	1	1986

Locations

Location	Patents	Span
Vestre Amoy, NO	8	1998–2006
Skien, NO	1	2021
Kolltveit, NO	1	2018
Sokn, NO	1	2003
Hegreberg, NO	1	2002