LexDanaLexDanabeta
Inventor

Robert J. North

Inventor
Anchorage, AK, US

Overview

4→
Patents
1999–2012
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

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

E21Bprimary
E21BEarth or rock drilling50%
G01FMeasuring volume, volume flow, mass flow or liquid level17%
G01VGeophysics17%
G06TImage data processing or generation, in general17%
PatentTitleYear
8,099,241'Method and apparatus for real time oil based mud contamination monitoring'20127,603,236'Method to determine fluid phase distribution and quantify holdup in a wellbore'20095,970,422'Method for generating a flow profile of a wellbore from pulsed neutron logs'19995,963,037'Method for generating a flow profile of a wellbore using resistivity logs'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999Patents assigned to ATLANTIC RICHFIELD CO (2)· patent assignee history
1999Based in Anchorage, AK, US· patent location history
2009–2012Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (2)· patent assignee history
2009Based in Livermore, CA, US· patent location history
2012Patents assigned to LIN CHEN (1)· patent assignee history
2012Patents assigned to NIU YUQIANG (1)· patent assignee history
2012Patents assigned to NORTH ROBERT (1)· patent assignee history
2012Based in Beijing, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ATLANTIC RICHFIELD CO21999
SCHLUMBERGER TECHNOLOGY CORP22009–2012
LIN CHEN12012
NIU YUQIANG12012
NORTH ROBERTself12012
Locations
LocationPatentsSpan
Anchorage, AK, US21999
Beijing, CN12012
Livermore, California, US12009