Vallourec
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Dec 04, 1990 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 749 Total Citation Count
- Dec 10, 1979 Earliest Filing
- 42 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
Top Patents (by citation)
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Recent Publications
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Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4974660 Process and apparatus for the production of hollow bodies by continuously casting in a magnetic fieldExpiredMay 01, 89Dec 04, 90[B22D]
4906292 Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said articleExpiredJan 22, 88Mar 06, 90[C21C]
4828294 Threaded joint for steel pipes containing a sealing device located at the level of the threadingExpiredMay 06, 87May 09, 89[F16L, E21B]
4828295 Steel tube threaded joint having an impervious device at the level of the threadingExpiredDec 05, 86May 09, 89[F16L, E21B]
4816068 Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said articleExpiredOct 08, 87Mar 28, 89[C21C]
4796668 Device for protecting threadings and butt-type joint bearing surfaces of metallic tubesExpiredJul 18, 85Jan 10, 89[F16L]
4791816 Device for determining when a threaded tube joint with screw limiting stop is properly made upExpiredAug 27, 87Dec 20, 88[G01B]
4729422 Process and apparatus for the production of hollow bodies by continuously casting in a magnetic fieldExpiredNov 08, 85Mar 08, 88[B22D]
4713955 Method permitting the increase of operations of cold pilger mills and an apparatus for the embodiment of this methodExpiredOct 22, 86Dec 22, 87[B21B]
4708897 Composite product having a tubular metal casing with a welt-type seam, and a core in powder form, which can be rolled upExpiredFeb 27, 84Nov 24, 87[C22B, B32B]
4700576 Process and device for executing the screwing of a threaded joint for tubes, equipped with a stopExpiredOct 08, 85Oct 20, 87[G01L]
4665734 Method and installation for selective detection of defects in a workpieceExpiredApr 03, 85May 19, 87[G01N]
4660398 Process for controlling a rolling mill having oblique rolls and a rolling mill for carrying out this processExpiredMar 26, 85Apr 28, 87[B21B]
4658617 Method permitting the increase of operations of cold pilger mills and an apparatus for the embodiment of this methodExpiredJan 02, 85Apr 21, 87[B21B]
4641410 Method and apparatus for making a joint for steel tubesExpiredMar 22, 85Feb 10, 87[B23Q, G01B]
4641513 Cold rolling process for tubes, by means of a Pilger rolling mill and the rolling mill for its executionExpiredJul 30, 84Feb 10, 87[B21B]
4617067 Process for the production of semi-finished articles of hard steels using a continuous casting operationExpiredAug 06, 81Oct 14, 86[C21D]
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