Katsumi Tozawa
10Patents
5h-index
19Co-inventors
63Inventor score
Filing activity: Aug 11, 1987 → Jun 14, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD386662S | Portable electric screwdriver | General | 62 | Expired |
| US5769657A | Attachment structure of battery pack to power-driven tools | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6305481A | Clutch mechanism for use in a power-driven tool | Mechanical Engineering; Lighting; Heating | 52 | Expired |
| USD307463S | Electric sprayer | General | 43 | Expired |
| US7424779B2 | Cutting tool | Performing Operations; Transporting | 13 | Expired |
| USD350267S | Cordless driver drill | General | 5 | Expired |
| US8991514B2 | Electric-power cultivator | Human Necessities | 3 | Active |
| US8683706B2 | Engine-driven cutter | Emerging Cross-Sectional Technologies | 1 | Active |
| US8595944B2 | Engine-driven cutter | General | 0 | Revoked |
| US9115645B2 | Engine-driven cutter | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.