Serco Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E01D BRIDGES 78
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 562
 
  
 
E01F ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE218
 
  
 
B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD 122

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6190108 Vehicle restraintApr 06, 95Feb 20, 01[B65G]
5526545 Automatic return to dock mechanismJan 11, 95Jun 18, 96[E01F, E01D]
5511267 Dock leveler hydraulic circuitJan 11, 95Apr 30, 96[E01D]
5459963 Safety gate for loading docksDec 16, 93Oct 24, 95[E01F]
5460460 Scissors lift dock levelerMar 01, 94Oct 24, 95[B66F, E01D]
5454682 Vehicle restraintMay 18, 94Oct 03, 95[B65G]
5396676 Vertically storing dock levelerNov 19, 92Mar 14, 95[E01D]
5346353 Vehicle restraintJan 12, 93Sep 13, 94[B65G]
5336033 Vehicle restraintFeb 21, 92Aug 09, 94[B65G]
5313681 Vertically storing dock levelerNov 20, 92May 24, 94[E01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D348387 Loading dock sealExpiredSep 21, 90Jul 05, 94[]
5303443 Dock leveler hold-down systemExpiredApr 02, 92Apr 19, 94[B65G]
5120181 Vehicle restraintExpiredJan 18, 90Jun 09, 92[B65G]
5097557 Trapezoidal beam dock levelerExpiredOct 05, 90Mar 24, 92[E01D]
5096359 Vehicle restraint actuatorExpiredJun 20, 90Mar 17, 92[B65G]
5088143 Dock leveler lip actuation mechanismExpiredDec 04, 90Feb 18, 92[E01D]
5071306 Vehicle restraintExpiredJul 11, 90Dec 10, 91[B65G]
5048246 Wedge seal for loading dock shelterExpiredAug 21, 90Sep 17, 91[E04H]
5026242 Automatic vehicle restraintExpiredFeb 21, 90Jun 25, 91[B65G]
5001799 Seal carried by a vertically storing dock levelerExpiredApr 03, 89Mar 26, 91[E01D]
4988254 Vehicle restraintExpiredAug 16, 88Jan 29, 91[B65G]
4979253 Hydraulic circuit for control of lip of vertically storing dock levelerExpiredJun 30, 89Dec 25, 90[E01D]
4977635 Control circuit for vertically storing dock levelerExpiredJun 30, 89Dec 18, 90[E01D]
4974276 Dock leveler hold-down with variable position safety legsExpiredFeb 06, 89Dec 04, 90[E01D]
4961241 Brake for rail dock levelerExpiredJun 29, 89Oct 09, 90[E01D]
4937906 Variable lip throw-out for dockboardExpiredJun 01, 89Jul 03, 90[E01D]
4928340 Dock levelerExpiredFeb 24, 89May 29, 90[E01D]
4847935 Dock leveler hold-downExpiredAug 16, 88Jul 18, 89[E01D]

Top Inventors for This Owner

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