COLUMBUS STEEL CASTINGS COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B22C FOUNDRY MOULDING 523
 
  
 
B61F RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES, ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING; WHEELS GUARDS; OBSTRUCTION REMOVERS OR THE LIKE 517
 
  
 
B61G COUPLINGS SPECIALLY ADAPTED FOR RAILWAY VEHICLES; DRAUGHT OR BUFFING APPLIANCES SPECIALLY ADAPTED FOR RAILWAY VEHICLES315
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 148
 
  
 
B61D BODY DETAILS OR KINDS OF RAILWAY VEHICLES 125
 
  
 
C21D MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS 144
 
  
 
C22C ALLOYS 171
 
  
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 190
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9409581 Knuckle design and system of makingJul 12, 13Aug 09, 16[B61G, B22D, C21D, B22C]
6758919 Cast steel composition for railway componentsMay 29, 02Jul 06, 04[C22C]
6543367 Lightweight truck sideframeNov 14, 00Apr 08, 03[B61F]
6405657 Railway truck with equalizer beam mounted disc brake caliperJan 31, 01Jun 18, 02[B61F]
6354226 Lightweight truck bolster having varying wall thickness ribsMar 01, 01Mar 12, 02[B61F]
6260179 Cell arrangement evaluating method, storage medium storing cell arrangement evaluating program, cell arranging apparatus and method, and storage medium storing cell arranging programMay 05, 98Jul 10, 01[G06F]
6196134 Light weight truck bolsterJan 27, 99Mar 06, 01[B61F]
5967349 Spring tab shim support in rotary shank couplerMar 09, 98Oct 19, 99[B61G]
5943964 Light weight draft armMar 18, 98Aug 31, 99[B61F]
5927522 Tightlock coupler locklift assemblyJun 05, 97Jul 27, 99[B61G]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0013,411 SYSTEM AND METHOD FOR IMPROVING THE STRENGTH OF RAILCAR COMPONENTSAbandonedMar 28, 14Jan 15, 15[B21D, C21D]
2014/0191,525 USE OF CARBON NANOFIBER COMPOSITE MATERIALS IN THE MANUFACTURE OF RAILCAR COMPONENTSAbandonedJan 10, 13Jul 10, 14[B60B]
2014/0034,263 FREIGHT CAR YOKE MOLDING APPARATUS AND METHODAbandonedOct 01, 13Feb 06, 14[B22D, B22C]
8627875 Freight car yoke molding apparatus and methodExpiredJul 16, 09Jan 14, 14[B22C]
8448691 Bearing housing molding apparatus and methodExpiredJul 16, 09May 28, 13[B22D, B22C]
7543626 Molding apparatus and methodExpiredMay 12, 06Jun 09, 09[B22C]
7523535 Railcar truck bolster side bearing mounting pad milling machine and methodExpiredNov 16, 05Apr 28, 09[B23C]
6857375 Traction pins for railway carsExpiredMay 24, 01Feb 22, 05[B61F]
6550394 Retractable auxiliary bumper for hydraulic or pneumatic railway suspensionsExpiredMar 11, 02Apr 22, 03[B61F]
6546877 Railway truck frame mounted load weigh valveExpiredDec 19, 01Apr 15, 03[B61D]
6089165 Railway truck with underslung equilizer beamsExpiredMar 24, 98Jul 18, 00[B61F]
6079335 Unsprung third rail collector beam support for a swing arm primary suspension railway truckExpiredFeb 23, 99Jun 27, 00[B61F]
6053112 Shimming of railway car primary suspensionsExpiredDec 07, 98Apr 25, 00[B61F]
5992330 Railway vehicle suspension aligned truckExpiredMay 19, 97Nov 30, 99[B61F]
5947031 Railway truck leveling valve arrangement for closer overall height controlExpiredOct 07, 97Sep 07, 99[B61F]
5927521 Lightweight and topless draft armExpiredOct 02, 97Jul 27, 99[B61G]
5924366 Side frame pedestal roof with rocker seatsExpiredMar 27, 98Jul 20, 99[B61F]
5456187 Railroad truck axle assembly retention mechanismExpiredFeb 01, 94Oct 10, 95[B61F]
5005715 Articulated railroad car connectorExpiredJul 24, 89Apr 09, 91[B61G]
4949856 Slackless drawbarExpiredNov 27, 87Aug 21, 90[B61G]

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