WALKER SYSTEMS, NC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02G INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES 247
 
  
 
E04B GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS 146
 
  
 
E04F FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS 126

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5195288 Floor fittingAug 30, 91Mar 23, 93[E04F]
5180074 Floor boxApr 09, 91Jan 19, 93[H02G]
5161339 Tile/carpet trim for trench ductApr 02, 91Nov 10, 92[E04B]
5160808 Access means for flush floor fittingSep 13, 91Nov 03, 92[H02G]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5058344 Wall panel systemExpiredMar 13, 90Oct 22, 91[E06B]
5049702 AftersetExpiredNov 21, 89Sep 17, 91[H02G]
5039827 Power cell feedExpiredNov 13, 89Aug 13, 91[H02G]
5034567 Access unit and bracket for mounting multiple duplex receptacles over a power cellExpiredJan 23, 89Jul 23, 91[H02G]
5030795 Low tension access hatchExpiredNov 28, 89Jul 09, 91[H02G]
5017153 Membrane for outlet fittingsExpiredAug 20, 90May 21, 91[H01R]
5008491 Floor box for access floorsExpiredMar 13, 89Apr 16, 91[H02G]
5003737 Side rail for trenchductExpiredOct 13, 89Apr 02, 91[E04B]
4986045 Cellular racewayExpiredJul 13, 89Jan 22, 91[E04F]
4965972 Combined deck unit and cellular racewayExpiredAug 07, 89Oct 30, 90[E04F]
4967041 Floor box for access floorsExpiredMar 03, 89Oct 30, 90[H02G]
4916258 Three service recessed aftersetExpiredApr 29, 88Apr 10, 90[H02G]
4905434 Aligning and coupling means for trenchductExpiredJan 12, 87Mar 06, 90[E04B]
4883924 Outlet fittingExpiredJul 20, 88Nov 28, 89[H02G]
4879435 Fitting for the underside of a cellular floorExpiredAug 09, 88Nov 07, 89[H02G]
4876834 Double adjustable duct supportExpiredAug 09, 88Oct 31, 89[E04B]
4864078 Activation kits for presetsExpiredMay 09, 88Sep 05, 89[H02G]
4857016 Components for flexible wiring systemsExpiredMar 30, 83Aug 15, 89[H01R]
4800237 Multi-service preset access unit for cellular racewayExpiredMar 11, 83Jan 24, 89[H02G]
4783577 Three service recessed aftersetExpiredSep 22, 87Nov 08, 88[H02G]

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