ETUDES ET FABRICATION DOWELL SCHLUMBERGER
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Aug 20, 1996 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 125 Total Citation Count
- Dec 28, 1983 Earliest Filing
- 6 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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Recent Publications
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5547926 New compositions for iron control in acid treatments for oil wellsExpiredJul 09, 92Aug 20, 96[E21B]
4974245 System for the assembly of a metal joining piece and a high pressure composite material tube notably applications for equipment used in the oil industryExpiredOct 21, 87Nov 27, 90[G01N]
4920795 Electromagnetic flowmeter for conductive or dielectric fluids and its applications in particular oilfieldExpiredNov 19, 87May 01, 90[G01F]
4767460 Cement compositions for cementing of wells enabling gas channelling in the cemented annulus to be inhibited by right-angle settingExpiredJan 17, 86Aug 30, 88[C04B, E21B]
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