WESTERN WELL TOOL, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 195

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0108,387 TRACTOR WITH IMPROVED VALVE SYSTEMAbandonedOct 27, 09May 06, 10[E21B]
2010/0038,138 TRACTOR WITH IMPROVED VALVE SYSTEMAbandonedFeb 10, 09Feb 18, 10[E21B]
2008/0217,024 DOWNHOLE TOOL WITH CLOSED LOOP POWER SYSTEMSAbandonedAug 24, 06Sep 11, 08[E21B]
2008/0053,663 DOWNHOLE TOOL WITH TURBINE-POWERED MOTORAbandonedAug 24, 06Mar 06, 08[E21B]
2008/0053,703 DOWNHOLE TOOL WITH TURBINE-POWERED PUMPAbandonedAug 24, 06Mar 06, 08[E21B]
2008/0047,715 Wellbore tractor with fluid conduit sheathAbandonedAug 24, 06Feb 28, 08[E21B]
5069297 Drill pipe/casing protector and methodExpiredMay 15, 90Dec 03, 91[E21B]

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