Shingo Umemura
12Patents
10h-index
22Co-inventors
68Inventor score
Filing activity: Jul 22, 1996 → Nov 14, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD412485S | Battery pack | General | 74 | Expired |
| US6066938A | Charging system including a charger and an electric power tool operating on an internal battery unit | Electricity | 74 | Expired |
| USD436917S | Battery pack | General | 71 | Expired |
| US6566005B1 | Battery pack with an improved cooling structure | Emerging Cross-Sectional Technologies | 60 | Expired |
| US6213224A | Electric power tool with enhanced strength to axially-applied external force | Performing Operations; Transporting | 49 | Expired |
| US7201235B2 | Driver drill | Performing Operations; Transporting | 47 | Expired |
| USD411425S | Cordless circular saw | General | 44 | Expired |
| USD411947S | Portable electric screwdriver | General | 41 | Expired |
| USD384261S | Portable electric screwdriver | General | 18 | Expired |
| USD384262S | Portable electric screwdriver | General | 10 | Expired |
| US8752744B2 | Portable tools | Performing Operations; Transporting | 8 | Active |
| US9160125B2 | Battery adapter | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.