Donald K. Rex
13Patents
6h-index
17Co-inventors
59Inventor score
Filing activity: Apr 17, 1975 → Jan 29, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5518324A | Platen to print head gap adjustment arrangement | Performing Operations; Transporting | 21 | Expired |
| US4671686A | Printer having removable paper feed module | Performing Operations; Transporting | 16 | Expired |
| US4453660A | Forms feed tractor | Performing Operations; Transporting | 13 | Expired |
| US3987883A | Ribbon lifting mechanism for a wire matrix printer | Performing Operations; Transporting | 10 | Expired |
| US4285604A | Ribbon shield for printer | Performing Operations; Transporting | 7 | Expired |
| US5005996A | Ribbon cartridge with endless ribbon reinking mechanism | Performing Operations; Transporting | 6 | Expired |
| US4643601A | Ribbon positioning mechanism | Performing Operations; Transporting | 5 | Expired |
| US4790467A | Web feed mechanism and door with static protrusions | Performing Operations; Transporting | 5 | Expired |
| US4284363A | Data matrix print head | Performing Operations; Transporting | 4 | Expired |
| US4585606A | Method of making an endless forms feed tractor belt | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5015108A | Ribbon print track reinking with a roll system | Performing Operations; Transporting | 2 | Expired |
| US4362406A | Dot matrix print head | Performing Operations; Transporting | 2 | Expired |
| US4376587A | Print ribbon protection | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.