John D. Sheldon
20Patents
10h-index
13Co-inventors
72Inventor score
Filing activity: Nov 4, 1974 → Oct 6, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4104796A | Filament-type trimmer | Human Necessities | 45 | Expired |
| US6108914A | Fixed line trimmer head | Human Necessities | 37 | Expired |
| US5782073A | Lawn mower cutting blade spindle assembly including quick change characteristics | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5960617A | Lawn mower cutting blade spindle assembly including quick change characteristics | Human Necessities | 29 | Expired |
| US5284006A | Combination mower blade | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4261302A | Air cleaning system of internal combustion engine | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6039020A | Multiple-position, operator-carried, four-stroke engine | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4036162A | Marine propulsion device having increased reverse thrust | Performing Operations; Transporting | 15 | Expired |
| US4253238A | Filament type trimmer | Human Necessities | 13 | Expired |
| US6945215B2 | Multiple-position, operator-carried, four-stroke engine | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6249978A | Flail head for a vegetation cutter | Human Necessities | 10 | Expired |
| US3946697A | Engine exhaust gas discharge arrangement | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5473873A | Combination mower blade | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6620039B1 | Method and apparatus for providing fresh air to a truck sleeper box | Performing Operations; Transporting | 6 | Expired |
| US6772726B2 | Multiple-position, operator-carried, four-stroke engine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6374796B1 | Multiple-position, operator-carried, four-stroke engine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4059371A | Rotary engine stationary gear locating and timing device | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7100550B2 | Two-stroke engine transfer ports | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4194609A | Speed and clutch control for engines including shift interlock | Performing Operations; Transporting | 1 | Expired |
| US6568364B2 | Multiple-position, operator-carried, four-stroke engine | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.