Cvetan Petroff
10Patents
7h-index
7Co-inventors
51Inventor score
Filing activity: Nov 6, 1985 → Aug 17, 1990
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD305096S | Retractable blade knife | General | 30 | Expired |
| USD303921S | Utility knife or similar article | General | 19 | Expired |
| US5009040A | Blade sharpener | Performing Operations; Transporting | 17 | Expired |
| USD296498S | Knife scabbard or similar article | General | 17 | Expired |
| USD303731S | Knife scabbard | General | 17 | Expired |
| US4862590A | Retractable blade knife | Performing Operations; Transporting | 10 | Expired |
| US4669337A | Knife sharpener | Performing Operations; Transporting | 7 | Expired |
| USD298399S | Knife handle or similar article | General | 6 | Expired |
| USD295132S | Cutlery scabbard or similar article | General | 2 | Expired |
| US4825544A | Scissors sharpener | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.