Control Flow 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 1185
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL367
 
  
 
F16H GEARING298
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 166

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9671044 Linear pipe recovery/lay tensioners and method of using sameSep 02, 14Jun 06, 17[F16L, B65H, E21B]
8821069 Linear pipe recovery/lay tensioners and methods of using sameJan 24, 12Sep 02, 14[F16L, E21B]
7815032 Pipe roller assemblyJul 02, 07Oct 19, 10[B65G]
7337849 Co-linear tensioner and methods of installing and removing sameJul 14, 06Mar 04, 08[E21B]
7163054 Breechblock connectors for use with oil field lines and oil field equipmentApr 19, 04Jan 16, 07[E21B]
7131496 Portable drill string compensatorJul 15, 05Nov 07, 06[E21B]
7131922 Ram-type tensioner assembly having integral hydraulic fluid accumulatorMar 03, 06Nov 07, 06[F16H]
7040393 Choke and kill line systems for blowout preventersJun 23, 03May 09, 06[E21B]
7008340 Ram-type tensioner assembly having integral hydraulic fluid accumulatorDec 09, 02Mar 07, 06[F16H]
6968900 Portable drill string compensatorDec 09, 02Nov 29, 05[E21B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2006/0180,314 Co-linear tensioner and methods of installing and removing sameAbandonedFeb 17, 05Aug 17, 06[E21B]

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