Yutaka Matsunaga
20Patents
15h-index
24Co-inventors
77Inventor score
Filing activity: Mar 18, 1999 → Jul 1, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6229280A | Power tool charging system having a charge level indicator and charge control functions | Electricity | 96 | Expired |
| US6318874A | Power tools having lighting devices | Emerging Cross-Sectional Technologies | 80 | Expired |
| US8678106B2 | Rotary impact tool | Performing Operations; Transporting | 78 | Active |
| US8179069B2 | Electric power tool, control unit and recording medium | Electricity | 66 | Active |
| US6511200B2 | Power tools having timer devices | Emerging Cross-Sectional Technologies | 60 | Expired |
| US6191554A | Power tool charging system having battery reconditioning and battery capacity data updating functions | Electricity | 54 | Expired |
| US8410756B2 | Battery pack having a sensor activated off switch | Emerging Cross-Sectional Technologies | 43 | Active |
| US7109675B2 | Power tools | Electricity | 37 | Expired |
| US8098036B2 | Electric power tool | Electricity | 32 | Active |
| US8215528B2 | Drive tool | Performing Operations; Transporting | 29 | Active |
| US6771043B2 | Power tools | Electricity | 29 | Expired |
| US8810085B2 | Electric power tool including a plurality of circuit boards | Electricity | 27 | Active |
| US7556103B2 | Tightening tool and tightening tool management system | Performing Operations; Transporting | 23 | Expired |
| US6353705B1 | Speed control circuit of a direct current motor | Emerging Cross-Sectional Technologies | 23 | Expired |
| US8167183B2 | Electric drive tool | Performing Operations; Transporting | 16 | Active |
| US7726412B2 | Tightening tool and tightening tool management system | Performing Operations; Transporting | 14 | Active |
| US8350512B2 | Electric power tool | Electricity | 12 | Active |
| US8346384B2 | Cutting machine, control unit and recording medium | Emerging Cross-Sectional Technologies | 3 | Active |
| US9190947B2 | Electric power tool | Electricity | 1 | Active |
| US9621009B2 | Electric power tool including a plurality of circuit boards | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.