Robert R. Shepard
7Patents
4h-index
7Co-inventors
50Inventor score
Filing activity: Jun 2, 1980 → Oct 23, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4873841A | Portable cooler | Mechanical Engineering; Lighting; Heating | 162 | Expired |
| US4926462A | Interface to and operation of a voice messaging system | Electricity | 140 | Expired |
| US5117451A | Interface to and operation of a voice messaging system | Electricity | 36 | Expired |
| US6742285B2 | Air knife and conveyor system | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| USD489848S1 | Glass washing machine | General | 4 | Expired |
| US4313037A | Telephone station set with improved flash signalling | Electricity | 3 | Expired |
| US10418005B2 | Multimedia display apparatus and method of use thereof | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.