Naofumi Kitagawa
6Patents
3h-index
13Co-inventors
46Inventor score
Filing activity: Feb 25, 2003 → May 29, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7207083B2 | Electric vacuum cleaner | Emerging Cross-Sectional Technologies | 32 | Expired |
| US7276099B2 | Electric vacuum cleaner | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7900916B2 | Paper sheet transport mechanism and paper handling device | Performing Operations; Transporting | 4 | Active |
| US8028989B2 | Paper stacking apparatus | Performing Operations; Transporting | 3 | Active |
| US7556263B2 | Paper stacking apparatus | Performing Operations; Transporting | 1 | Active |
| US7922172B2 | Paper stacking apparatus | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.