Harry Madison
18Patents
11h-index
12Co-inventors
65Inventor score
Filing activity: Sep 6, 1988 → Jul 30, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5048424A | Tie replacer and method | Fixed Constructions | 20 | Expired |
| US4951573A | Tie remover and inserter | Fixed Constructions | 19 | Expired |
| US5868078A | Road and rail vehicle using rail wheel drive and apparatus | Performing Operations; Transporting | 19 | Expired |
| US5186109A | Side shift railway guide wheel apparatus for rail/highway conversion with V-shaped automatic centering surfaces for centering vehicle relative to the rails | Performing Operations; Transporting | 18 | Expired |
| US5542355A | Tie plate track fastener feeder | Fixed Constructions | 17 | Expired |
| US6595140B1 | Railway tie plate insertion apparatus and method | Fixed Constructions | 17 | Expired |
| US5197389A | Tie replacer | Fixed Constructions | 15 | Expired |
| US5305692A | Truck mounted tie exchanger with self-aligning tie clamp | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6089162A | Rail vehicle for tie loading and unloading | Fixed Constructions | 13 | Expired |
| US5359815A | Profile grinder | Fixed Constructions | 12 | Expired |
| US5619931A | Road and rail using rail wheel drive and apparatus | Performing Operations; Transporting | 11 | Expired |
| US6662729B1 | Rail anchor spreader | Fixed Constructions | 11 | Expired |
| US5154124A | Rail engagement apparatus which uses vehicle supension | Performing Operations; Transporting | 9 | Expired |
| US5586507A | Rail guide wheel apparatus with double overcenter linkage | Performing Operations; Transporting | 7 | Expired |
| US5660115A | Vertically actuated rail guide wheels | Performing Operations; Transporting | 7 | Expired |
| US6536354B1 | Railway tie bed scarifier | Fixed Constructions | 3 | Expired |
| US6499937B1 | Material distribution system for stick-like objects | Fixed Constructions | 2 | Expired |
| US6575099B1 | Railway tie insertion guide | Fixed Constructions | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.