David A. Sprankle
11Patents
4h-index
14Co-inventors
57Inventor score
Filing activity: Oct 11, 1985 → Mar 9, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7988015B2 | Adjustable storage rack for a vending machine | Physics | 1,067 | Active |
| US4620175A | Simple thermostat for dip mounting | Electricity | 26 | Expired |
| US4795997A | Thermostat for board mounting | Electricity | 13 | Expired |
| US7446302B2 | Optical vend-sensing system for control of vending machine | Physics | 11 | Expired |
| US8507884B2 | Elliptical light source for ultraviolet (UV) curing lamp assemblies | Electricity | 2 | Active |
| US7246719B2 | Adjustable storage rack for a vending machine | Physics | 2 | Expired |
| US9664371B2 | Lamp head assemblies and methods of assembling the same | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7906911B2 | Luminaire assembly having a bonded reflector cavity for supporting an ultra-violet lamp | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7977659B2 | Radio frequency screen assembly for microwave cavities | Electricity | 1 | Active |
| US10308550B2 | Device including a radiation emitter for applying radiation to a target, and related methods | Physics | 0 | Active |
| US8003931B2 | Optical vend-sensing system for control of vending machine | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.