LexDanaLexDanabeta
Inventor

Steven James Hart

Inventor
Yate, GB

Overview

4→
Patents
2002–2011
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 drilling100%
PatentTitleYear
7,942,214'Steerable drilling system'20117,188,685'Hybrid rotary steerable system'20076,606,923'Design method for drillout bi-center bits'20036,394,200'Drillout bi-center bit'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002Patents assigned to CAMCO INTERNAT U K LTD (1)· patent assignee history
2002–2003Based in Bath, GB· patent location history
2003Patents assigned to GRANT PRIDECO LP (1)· patent assignee history
2007Patents assigned to SCHLUMBERGE TECHNOLOGY CORP (1)· patent assignee history
2007–2011Based in Yate, GB· patent location history
2011Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CAMCO INTERNAT U K LTD12002
GRANT PRIDECO LP12003
SCHLUMBERGE TECHNOLOGY CORP12007
SCHLUMBERGER TECHNOLOGY CORP12011
Locations
LocationPatentsSpan
Yate, GB22007–2011
Bath, GB22002–2003