John A. Frank
6Patents
4h-index
14Co-inventors
43Inventor score
Filing activity: May 4, 1988 → Aug 13, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5039598A | Ionographic imaging system | Performing Operations; Transporting | 46 | Expired |
| US5073434A | Ionographic imaging system | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5153618A | Ionographic imaging system | Physics | 13 | Expired |
| US4812860A | Heater for ionographic marking head array | Physics | 8 | Expired |
| US5138349A | Apparatus for reducing the effects of ambient humidity variations upon an ionographic printing device | Physics | 1 | Expired |
| US5081475A | Vertical line width control ionographic system | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.