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Inventor

John M. Corben

Inventor
Colonia Granada, MX

Overview

3→
Patents
2003–2008
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 3 as inventor

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

E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
7,458,421'Methods and systems for robust and accurate determination of wireline depth in a borehole'20087,455,104'Expandable elements'20086,588,508'Method and apparatus to reduce trapped pressure in a downhole tool'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2008Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (3)· patent assignee history
2003Based in Sugar Land, TX, US· patent location history
2008Based in Colonia Granada, MX· patent location history
2008Based in Clamart, FR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SCHLUMBERGER TECHNOLOGY CORP32003–2008
Locations
LocationPatentsSpan
Colonia Granada, MX12008
Clamart, FR12008
Sugar Land, Texas, US12003