HYDRIL LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL120
 
  
 
F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 148
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7607333 Helical groove for a tubular connectionJan 25, 07Oct 27, 09[B21C]
7326015 Electrically insulated wedge thread connectionAug 30, 05Feb 05, 08[F16B]
6695357 Threaded pipe connection having a retainer gasket with pressure relief ventsSep 04, 02Feb 24, 04[F16L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2007/0261,768 METHOD FOR DESIGNING CORROSION RESISTANT ALLOY TUBULAR STRINGSAbandonedMay 10, 06Nov 15, 07[C21D]
5015017 Threaded tubular couplingExpiredJul 25, 88May 14, 91[F16L]
4846507 Casing connectorExpiredMar 01, 84Jul 11, 89[F16L]

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