Roy F. Johnson
3Patents
2h-index
5Co-inventors
33Inventor score
Filing activity: Apr 8, 1998 → Dec 28, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6131774A | Flowable material dispenser with automatic shutoff and vessel for receiving flowable material | Physics | 34 | Expired |
| US7213821B1 | Expandable cart apparatus | Performing Operations; Transporting | 7 | Expired |
| US6675840B2 | Fill probe with in-line mixer | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.