VAE NORTRAK NORTH AMERICA INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E01B PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS 418
 
  
 
B61L GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC 125

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5419518 Railroad switch stand having foot and hand accommodating throw handleDec 20, 94May 30, 95[B61L]
5312075 Railroad frogDec 13, 91May 17, 94[E01B]
5238186 Guard rail assembly hookJun 15, 92Aug 24, 93[E01B]
5236125 Guard rail assembly support blockJun 15, 92Aug 17, 93[E01B]
5176318 Guard rail assemblyJan 24, 92Jan 05, 93[E01B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0072,326 INTEGRATED LOCKING CONTROL AND STATUS INDICATOR FOR MANUALLY OPERATED RAILWAY SWITCH STANDAbandonedSep 19, 08Mar 25, 10[B61L]
5806810 Spring rail frog having switchable magnet for holding wing rail openExpiredDec 01, 97Sep 15, 98[B61L, E01B]
5104041 Rail brace assemblyExpiredOct 01, 90Apr 14, 92[E01B]
4938436 Safety harness and belt assemblies for aircraft crewmembersExpiredAug 31, 88Jul 03, 90[B64D]
4938438 Railroad switch standExpiredJan 09, 89Jul 03, 90[B61L]
4824015 Rail braceExpiredNov 06, 87Apr 25, 89[E01B]
4824055 Railroad FROGExpiredFeb 02, 87Apr 25, 89[E01B]
4770342 Adjustable rail braceExpiredFeb 05, 87Sep 13, 88[E01B]
4749419 Method for heat treating railExpiredAug 28, 86Jun 07, 88[C21D]
4738418 Adjustable switch point guardExpiredSep 22, 86Apr 19, 88[E01B]
4637578 Railroad frog having movable wing railsExpiredOct 26, 83Jan 20, 87[E01B]
4624428 Spring rail frogExpiredSep 20, 84Nov 25, 86[B61L]

Top Inventors for This Owner

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