COMPUTALOG LTD.

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

  • No Technology to Display

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

  • No Recent Patents to Display

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6808455 Torsional shock absorber for a drill stringExpiredMay 03, 00Oct 26, 04[F16D]
6192748 Dynamic orienting reference system for directional drillingExpiredOct 30, 98Feb 27, 01[E21B]
5934378 Centralizers for a downhole toolExpiredAug 07, 97Aug 10, 99[E21B]
5836388 Flexible joint for downhole toolsExpiredJul 16, 97Nov 17, 98[E21B]
5103430 Mud pulse pressure signal generatorExpiredNov 01, 90Apr 07, 92[G01V]
5078650 Universal joint arrangement for downhole toolsExpiredApr 13, 90Jan 07, 92[F16D]
4745982 Adjustable bent subExpiredNov 28, 86May 24, 88[E21B]
4683964 Downhole drill bit drive apparatusExpiredOct 25, 85Aug 04, 87[E21B]
4302886 Gyroscopic directional surveying instrumentExpiredOct 29, 79Dec 01, 81[E21B]

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.