| 2025/0085,156 | LOADING GRANULATED METALLIC UNITS INTO RAILCARS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS | Sep 11, 24 | Mar 13, 25 | Not available |
| 2024/0391,507 | OPEN TOP GONDOLA RAILCAR | Aug 06, 24 | Nov 28, 24 | Not available |
| 2023/0399,031 | RAIL CAR MODULARIZED MODIFICATION PROGRAMS ALTERING THE NATURE OF THE CENTER SILL IN THE MODIFIED RAILCAR AND THE MODIFIED RAILCARS FORMED THEREBY | Jun 09, 23 | Dec 14, 23 | Not available |
| 2021/0039,685 | OPEN TOP GONDOLA RAILCAR | Sep 11, 20 | Feb 11, 21 | Not available |
| 2016/0001,787 | EQUIPMENT ENVELOPE FOR HOPPER WAGON | Feb 18, 14 | Jan 07, 16 | DRAX POWER LIMITED |
| 2015/0375,761 | COVERING SYSTEM FOR A HOPPER WAGON | Feb 18, 14 | Dec 31, 15 | DRAX POWER LIMITED |
| 2015/0360,703 | SIDEWALL STRUCTURE OF HOPPER CAR | Nov 06, 14 | Dec 17, 15 | CRRC YANGTZE CORPORATION LIMITED |
| 2014/0352,571 | Railcar seals (rapid wrap™) and related methods | Jun 04, 13 | Dec 04, 14 | Not available |
| 2013/0160,670 | Open Top Hopper Railcar with Lading Shedding Top Chord and Corner Cap and Integrated Door Operating Controls with Manual Override | Dec 03, 12 | Jun 27, 13 | JAC OPERATIONS, INC. |
| 2013/0032,055 | Side Contoured Open Top Hopper Railcar with Biased Door Seal and Enlarged Contoured End Door | Jul 20, 12 | Feb 07, 13 | JAC OPERATIONS, INC. |
| 2013/0000,509 | BALLAST HOPPER CAR DISCHARGE DOOR CONTROL SYSTEM | Aug 03, 12 | Jan 03, 13 | CRRC QIQIHAR ROLLING STOCK CO., LTD. |
| 2012/0237,302 | PRESSURE GAUGE ASSEMBLY FOR A RAILCAR AND METHOD OF ASSEMBLING THE SAME | Mar 16, 11 | Sep 20, 12 | AMERICAN RAILCAR INDUSTRIES, INC. |
| 2012/0199,042 | SUPPORT SYSTEM FOR A RAILCAR AND METHOD FOR ASSEMBLING THE SAME | Feb 07, 11 | Aug 09, 12 | AMERICAN RAILCAR INDUSTRIES, INC. |
| 2010/0251,925 | Dual Stage Railroad Hopper Car Door Actuating Mechanism | Feb 19, 10 | Oct 07, 10 | D.A. International Casting, Inc. |
| 2010/0101,447 | Gondola Rail Car With Tub Floor | Oct 29, 09 | Apr 29, 10 | PROGRESS RAIL SERVICES CORPORATION |
| 2008/0127,854 | HOPPER CAR SIDE CONSTRUCTION AND METHOD | Dec 01, 06 | Jun 05, 08 | NATIONAL STEEL CAR LIMITED |
| 2008/0066,642 | RAIL ROAD HOPPER CAR FITTINGS AND METHOD OF OPERATION | Sep 08, 06 | Mar 20, 08 | NATIONAL STEEL CAR LIMITED |
| 2008/0035,014 | Lightweight hopper car with through center sill | Apr 23, 07 | Feb 14, 08 | GUNDERSON LLC |
| 2007/0175,357 | HOPPER RAILCAR WITH AUTOMATIC INDIVIDUAL DOOR SYSTEM | Jan 23, 07 | Aug 02, 07 | JAC OPERATIONS, INC. |
| 2007/0107,624 | Manual railroad hopper car door actuating mechanism | Nov 17, 06 | May 17, 07 | Not available |