National Casting Incorporated
18Patents
0Active
18Granted
30Portfolio score
Filing activity: Apr 8, 1985 → Jan 20, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5632208A | Multi-axle railroad car truck | Performing Operations; Transporting | 52 | Expired |
| US5027716A | Stabilized swing-motion truck for railway cars | Performing Operations; Transporting | 49 | Expired |
| US5463964A | Rocker seat connection | Performing Operations; Transporting | 48 | Expired |
| US5241913A | Reinforced bolster for a railroad car truck | Performing Operations; Transporting | 46 | Expired |
| US5239932A | Force dampening mechanism of a railroad car truck | Performing Operations; Transporting | 45 | Expired |
| US5226369A | Sideframe for a railroad car truck | Performing Operations; Transporting | 42 | Expired |
| US5327837A | Bolster of a railroad car truck with varying cross-sectional shape to provide less torsional rigidity at ends | Performing Operations; Transporting | 41 | Expired |
| US6129227A | Lightweight knuckle for a railroad car coupler | Performing Operations; Transporting | 37 | Expired |
| US5954212A | Lightweight knuckle for a railroad car coupler | Performing Operations; Transporting | 35 | Expired |
| US4867071A | Truck-mounted articulated connector for railway cars | Performing Operations; Transporting | 28 | Expired |
| US4645085A | Method of enhancing rigidity in a railway car coupler knuckle | Performing Operations; Transporting | 25 | Expired |
| US5139161A | Automatic actuator for coupler knuckle-assembly of a railway passenger car | Performing Operations; Transporting | 21 | Expired |
| US4744308A | Combined center plate/center filler for railway freight cars | Performing Operations; Transporting | 13 | Expired |
| US5507400A | Slackless drawbar or coupler with swivel mounting | Performing Operations; Transporting | 9 | Expired |
| US5131548A | Slackless, resilient drawbar system for a railway car | Performing Operations; Transporting | 8 | Expired |
| US5524552A | Single axle truck for large railroad cars | Performing Operations; Transporting | 6 | Expired |
| US5593051A | Slackless cushioning device for railroad cars | Performing Operations; Transporting | 3 | Expired |
| US4766819A | Saddle frame for passive steering single-axle truck for a railway freight car | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.