MARITIME HYDRAULICS AS

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B66C CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES 130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5677821 Method and device for detecting full magnetization of electro-permanent magnetsNov 30, 95Oct 14, 97[B66C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2004/0134,661 Riser-tensioning device balanced by horizontal forceAbandonedDec 05, 03Jul 15, 04[E21B]
6691784 Riser tensioning systemExpiredJun 19, 02Feb 17, 04[E21B]
6202274 Arrangement for fastening a piston-cylinder arrangement and method for replacing sealings thereinExpiredJul 30, 98Mar 20, 01[B23P]
5709285 Brake for a hoisting apparatusExpiredOct 03, 95Jan 20, 98[F16D, B66D]
4979356 Torque wrenchExpiredApr 18, 89Dec 25, 90[B25B]
4830336 Arrangement in a hoisting device, especially for a derrickExpiredMar 31, 88May 16, 89[B66F]
4822230 Pipe handling apparatusExpiredOct 20, 87Apr 18, 89[E21B]
4791999 Well drilling apparatusExpiredFeb 11, 86Dec 20, 88[E21B]
4593773 Well drilling assemblyExpiredMay 14, 84Jun 10, 86[E21B]
4582133 Pipe handling assemblyExpiredMay 25, 84Apr 15, 86[E21B]

Top Inventors for This Owner

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