Assignee
NAT STEEL CAR LTD
CA·142 granted patents·26 pending applications·2,676 citations·filing 1986–2025
Top patents by PatentIndex Score
168 records- 0199US7921783B2Hopper car with lading dislodgement fittings and method of operationNAT STEEL CAR LTD·Filed 2008·Granted Apr 12, 2011·86 cites·18 claims
- 0299US7328659B2Rail road freight car with resilient suspensionNAT STEEL CAR LTD·Filed 2005·Granted Feb 12, 2008·56 cites·23 claims
- 0398US8025014B2Railroad freight carNAT STEEL CAR LTD·Filed 2010·Granted Sep 27, 2011·33 cites·25 claims
- 0498US7878125B2Railroad freight carNAT STEEL CAR LTD·Filed 2010·Granted Feb 1, 2011·28 cites·20 claims
- 0598US7571684B2Rail road freight car with damped suspensionNAT STEEL CAR LTD·Filed 2007·Granted Aug 11, 2009·32 cites·28 claims
- 0698US7267059B2Rail road freight car with damped suspensionNAT STEEL CAR LTD·Filed 2005·Granted Sep 11, 2007·49 cites·75 claims
- 0798US7263931B2Rail road car and truck thereforNAT STEEL CAR LTD·Filed 2006·Granted Sep 4, 2007·43 cites·20 claims
- 0897US8011306B2Rail road car and truck thereforNAT STEEL CAR LTD·Filed 2009·Granted Sep 6, 2011·29 cites·33 claims
- 0997US7699008B2Rail road freight car with damped suspensionNAT STEEL CAR LTD·Filed 2007·Granted Apr 20, 2010·31 cites·25 claims
- 1097US7681506B2Truck bolsterNAT STEEL CAR LTD·Filed 2005·Granted Mar 23, 2010·48 cites·42 claims
- 1197US7603954B2Rail road car and truck thereforNAT STEEL CAR LTD·Filed 2007·Granted Oct 20, 2009·34 cites·91 claims
- 1297US7497169B2Rail road car truck and fittings thereforNAT STEEL CAR LTD·Filed 2006·Granted Mar 3, 2009·41 cites·33 claims
- 1397US7143700B2Rail road car truck and fittings thereforNAT STEEL CAR LTD·Filed 2004·Granted Dec 5, 2006·60 cites·50 claims
- 1497US6895866B2Rail road freight car with damped suspensionNAT STEEL CAR LTD·Filed 2002·Granted May 24, 2005·73 cites·59 claims
- 1597US6659016B2Rail road freight car with resilient suspensionNAT STEEL CAR LTD·Filed 2001·Granted Dec 9, 2003·68 cites·46 claims
- 1696US10214224B2Rail road hopper carNAT STEEL CAR LTD·Filed 2016·Granted Feb 26, 2019·5 cites·18 claims
- 1796US7845288B2Rail road car truck and members thereofNAT STEEL CAR LTD·Filed 2004·Granted Dec 7, 2010·53 cites·19 claims
- 1896US7775163B2Rail road car and bearing adapter fittings thereforNAT STEEL CAR LTD·Filed 2007·Granted Aug 17, 2010·41 cites·35 claims
- 1996US7654204B2Rail road car truck with bearing adapter and methodNAT STEEL CAR LTD·Filed 2008·Granted Feb 2, 2010·31 cites·11 claims
- 2096US7610862B2Rail road car truck with rocking sideframeNAT STEEL CAR LTD·Filed 2007·Granted Nov 3, 2009·29 cites·47 claims
- 2196US7434519B2Rail road freight carNAT STEEL CAR LTD·Filed 2005·Granted Oct 14, 2008·35 cites·27 claims
- 2295US7946229B2Rail road car truckNAT STEEL CAR LTD·Filed 2008·Granted May 24, 2011·31 cites·38 claims
- 2395US6874426B2Rail road car truck with bearing adapter and methodNAT STEEL CAR LTD·Filed 2003·Granted Apr 5, 2005·50 cites·17 claims
- 2494US7784411B2Rail road car body structureNAT STEEL CAR LTD·Filed 2007·Granted Aug 31, 2010·23 cites·33 claims
- 2593US8356560B2Railroad car and door mechanism thereforNAT STEEL CAR LTD·Filed 2010·Granted Jan 22, 2013·10 cites·30 claims
- 2693US7004079B2Rail road car and truck thereforNAT STEEL CAR LTD·Filed 2003·Granted Feb 28, 2006·35 cites·31 claims
- 2793US5520489ARetractable guide assembly for changing the effective width of a railroad freight car container wellNAT STEEL CAR LTD·Filed 1994·Granted May 28, 1996·67 cites·11 claims
- 2892US7789023B2Auto rack railcar with end closureNAT STEEL CAR LTD·Filed 2009·Granted Sep 7, 2010·12 cites·20 claims
- 2992US7780021B2Rail road car draft fittingsNAT STEEL CAR LTD·Filed 2005·Granted Aug 24, 2010·19 cites·30 claims
- 3092US7757611B2Railroad freight carNAT STEEL CAR LTD·Filed 2009·Granted Jul 20, 2010·15 cites·20 claims
- 3192US7631603B2Rail road car truck and bolster thereforNAT STEEL CAR LTD·Filed 2004·Granted Dec 15, 2009·43 cites·28 claims
- 3292US7559284B2Railroad freight carNAT STEEL CAR LTD·Filed 2008·Granted Jul 14, 2009·16 cites·9 claims
- 3392US7461600B2Rail road freight car structureNAT STEEL CAR LTD·Filed 2005·Granted Dec 9, 2008·24 cites·30 claims
- 3491US9272717B2Rail road hopper car ridge fittingsNAT STEEL CAR LTD·Filed 2013·Granted Mar 1, 2016·7 cites·20 claims
- 3591US7823513B2Rail road car truckNAT STEEL CAR LTD·Filed 2003·Granted Nov 2, 2010·36 cites·66 claims
- 3691US7703397B2Rail road hopper car fittings and method of operationNAT STEEL CAR LTD·Filed 2006·Granted Apr 27, 2010·14 cites·26 claims
- 3791US6505564B2Well car with cross memberNAT STEEL CAR LTD·Filed 2001·Granted Jan 14, 2003·31 cites·64 claims
- 3890US6920828B2Rail road freight car with resilient suspensionNAT STEEL CAR LTD·Filed 2003·Granted Jul 26, 2005·33 cites·24 claims
- 3990US6584912B2Well car structureNAT STEEL CAR LTD·Filed 2001·Granted Jul 1, 2003·38 cites·42 claims
- 4089US10377392B2Autorack railroad car having convertible deck structureNAT STEEL CAR LTD·Filed 2016·Granted Aug 13, 2019·4 cites·48 claims
- 4189US10286932B2Rail road car truck and members thereforNAT STEEL CAR LTD·Filed 2016·Granted May 14, 2019·3 cites·14 claims
- 4289US7234904B2Coil stop for rail road coil carNAT STEEL CAR LTD·Filed 2005·Granted Jun 26, 2007·11 cites·15 claims
- 4389US6551039B1Auto rack rail road car with reduced slackNAT STEEL CAR LTD·Filed 2000·Granted Apr 22, 2003·28 cites·34 claims
- 4489US6352400B1Rail road loading apparatus and methodNAT STEEL CAR LTD·Filed 2000·Granted Mar 5, 2002·37 cites·32 claims
- 4588US9346472B2Rail road freight carNAT STEEL CAR LTD·Filed 2013·Granted May 24, 2016·18 cites·33 claims
- 4688US8973508B2Freight car with lifting location and methodNAT STEEL CAR LTD·Filed 2013·Granted Mar 10, 2015·12 cites·32 claims
- 4788US7908975B2Hollow railroad car structureNAT STEEL CAR LTD·Filed 2007·Granted Mar 22, 2011·14 cites·20 claims
- 4888US7255047B1Vehicle carrying rail road car and bridge plate thereforNAT STEEL CAR LTD·Filed 2000·Granted Aug 14, 2007·36 cites·20 claims
- 4988US6446561B1Autorack railcar structureNAT STEEL CAR LTD·Filed 2000·Granted Sep 10, 2002·33 cites·39 claims
- 5088US4802420ACentre beam railroad carNAT STEEL CAR LTD·Filed 1987·Granted Feb 7, 1989·55 cites·8 claims
Showing the top 50 of 168 patent records by PatentIndex Score.
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