John E. Ramsey
34Patents
15h-index
35Co-inventors
81Inventor score
Filing activity: Nov 25, 1986 → Aug 7, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5366237A | Axle suspension systems | Performing Operations; Transporting | 100 | Expired |
| US5037126A | Lightweight beam suspension system | Performing Operations; Transporting | 71 | Expired |
| US6508482B2 | Trailing arm axle/suspension system | Performing Operations; Transporting | 58 | Expired |
| US5649719A | Linkage suspension system | Performing Operations; Transporting | 53 | Expired |
| US7303200B2 | Hanger-free movable subframe for tractor-trailers | Performing Operations; Transporting | 41 | Expired |
| US5720489A | Movable subframe for tractor-trailers | Performing Operations; Transporting | 41 | Expired |
| US6416069B1 | Underbeam axle lift assembly | Performing Operations; Transporting | 34 | Expired |
| US4783096A | Stacked airbag wheeled vehicle suspension system | Performing Operations; Transporting | 26 | Expired |
| US6213507A | Vehicle trailer frame cross member/suspension assembly mount | Performing Operations; Transporting | 25 | Expired |
| US6425593B2 | Aluminum frame hanger for axle/suspension systems | Performing Operations; Transporting | 23 | Expired |
| US7731211B2 | Heavy-duty vehicle axle/suspension system | Performing Operations; Transporting | 21 | Active |
| US5642896A | Locking pins for movable subframe of tractor-trailers | Performing Operations; Transporting | 21 | Expired |
| US7464948B2 | Distributed compliance axle/suspension system | Performing Operations; Transporting | 19 | Expired |
| US7131652B2 | Steering damper and backup lock beam attachment | Performing Operations; Transporting | 17 | Expired |
| US7568710B2 | Steerable axle automatic lift sensor system | Performing Operations; Transporting | 15 | Expired |
| US7600785B2 | Frame for heavy-duty vehicles | Performing Operations; Transporting | 14 | Active |
| US7658412B2 | Frame for heavy-duty vehicles | Performing Operations; Transporting | 13 | Active |
| US7503586B2 | Vehicle frame having air tank cross member | Performing Operations; Transporting | 11 | Active |
| US7207583B2 | Spacer apparatus for suspension beam bushing assemblies | Performing Operations; Transporting | 11 | Expired |
| US8496259B2 | Slider box for a heavy-duty vehicle | Performing Operations; Transporting | 9 | Active |
| US7198298B2 | Movable subframe for semi-trailers | Performing Operations; Transporting | 8 | Expired |
| US8851492B2 | Mechanical stop for axle/suspension systems | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US7549660B2 | Frame or subframe for tractor-trailers | Performing Operations; Transporting | 6 | Active |
| US7455306B2 | Integral arm axle/suspension system | Performing Operations; Transporting | 6 | Active |
| US8801013B2 | Hanger arrangement for heavy-duty vehicle axle/suspension systems | Performing Operations; Transporting | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.