James E. Hart
83Patents
16h-index
39Co-inventors
84Inventor score
Filing activity: Jan 27, 1975 → Jan 6, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5785392A | Selectable grade and uniform net shoe force braking for railway freight vehicle | Performing Operations; Transporting | 76 | Expired |
| US5833325A | Freight brake control using train net braking ratio | Performing Operations; Transporting | 54 | Expired |
| US5927822A | Freight brake control using train net braking ratio | Performing Operations; Transporting | 46 | Expired |
| US5820226A | Freight brake control for uniform car deceleration | Performing Operations; Transporting | 46 | Expired |
| US5156402A | Swing training machine | Human Necessities | 43 | Expired |
| US5524573A | Dog transportation box | Human Necessities | 33 | Expired |
| US5876395A | Adjustable athletic support garment and incontinence pad holder | Human Necessities | 31 | Expired |
| US5564794A | Train brake pipe pressure exhaust control system and regulating valve therefor | Performing Operations; Transporting | 29 | Expired |
| US4635242A | Underwater signalling device | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4793446A | Single-cylinder, truck-mounted brake assembly | Performing Operations; Transporting | 23 | Expired |
| US4830148A | Truss-type brake beam for railway vehicle truck-mounted brake assembly | Performing Operations; Transporting | 22 | Expired |
| US6126247A | Computer control of railroad train brake system operation | Performing Operations; Transporting | 22 | Expired |
| US7140477B2 | Automatic parking brake for a rail vehicle | Performing Operations; Transporting | 22 | Expired |
| US4613016A | Single-cylinder truck-mounted brake assembly | Performing Operations; Transporting | 20 | Expired |
| US5509727A | Ralway automatic brake control valve test unit | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6089262A | Retained seat check valve | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5788338A | Train brake pipe remote pressure control system and motor-driven regulating valve therefor | Performing Operations; Transporting | 15 | Expired |
| US5005915A | Empty/load changeover valve for railway car | Performing Operations; Transporting | 14 | Expired |
| US5451099A | Railway brake pipe bracket access plate | Performing Operations; Transporting | 14 | Expired |
| US4053559A | Production of uranium dioxide | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6394559B1 | Control apparatus for the application and release of a hand brake | Performing Operations; Transporting | 14 | Expired |
| US4666166A | Clamping arrangement for diaphragm-type piston | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4339155A | Control valve arrangement for combined brake and air reservoir device | Performing Operations; Transporting | 13 | Expired |
| US6353780B1 | Grade speed control and method for railway freight vehicle | Emerging Cross-Sectional Technologies | 13 | Expired |
| US3952342A | Multipurpose furniture | Human Necessities | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.