Blackhawk Specialty Tools, LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 2076
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0045,017 Slip Assembly for Anchoring Downhole Plugs and RetainersAug 09, 17Feb 15, 18[E21B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9689216 Method and apparatus for automated connection of a fluid conduitFeb 02, 16Jun 27, 17[E21B]
9683437 Method of signaling passage of objects using tattle-tale apparatusSep 10, 14Jun 20, 17[E21B]
9677351 Method and apparatus for anchoring casing and other tubular goodsSep 18, 13Jun 13, 17[E21B]
9605505 Method and apparatus for performing cementing operationsDec 07, 15Mar 28, 17[E21B]
9500060 Method and apparatus for performing cementing operations on top drive rigsJan 23, 14Nov 22, 16[E21B]
9488032 Method and apparatus for retaining a valve to a cement headApr 11, 14Nov 08, 16[F16L, F16M, E21B]
9328585 Large bore auto-fill float equipmentJan 12, 15May 03, 16[E21B]
9297218 Well centralizerAug 10, 15Mar 29, 16[E21B]
9212531 Method and apparatus for performing cementing operationsJan 22, 10Dec 15, 15[E21B]
9127519 Well centralizerMar 20, 13Sep 08, 15[E21B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0159,457 AUTOMATED CONNECTION ASSEMBLYAbandonedDec 10, 14Jun 11, 15[E21B]
2013/0105,144 Method and Apparatus for Catching Darts and Other Dropped ObjectsAbandonedOct 31, 12May 02, 13[E21B]

Top Inventors for This Owner

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