Naohiro Hayakawa
55Patents
21h-index
60Co-inventors
91Inventor score
Filing activity: Apr 5, 1985 → Oct 11, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD347731S | Carrying case for a tool | General | 77 | Expired |
| USD436917S | Battery pack | General | 71 | Expired |
| USD436511S | Portable electric drill | General | 70 | Expired |
| USD386662S | Portable electric screwdriver | General | 62 | Expired |
| USD437761S | Rechargeable impact wrench | General | 53 | Expired |
| USD431697S | Portable electric blower | General | 50 | Expired |
| USD486049S1 | Portable electric drill | General | 47 | Expired |
| USD444363S | Portable electric drill | General | 40 | Expired |
| USD427874S | Circular saw | General | 39 | Expired |
| USD494435S1 | Rechargeable impact driver | General | 33 | Expired |
| USD375570S | Flashlight | General | 33 | Expired |
| USD588891S1 | Portable electric drill | General | 31 | Expired |
| USD426125S | Portable electric driver | General | 30 | Expired |
| USD468179S1 | Portable electric grinder | General | 29 | Expired |
| USD372407S | Hedge trimmer | General | 28 | Expired |
| USD388442S | Miter saw | General | 28 | Expired |
| USD476870S1 | Portable electric drill | General | 27 | Expired |
| USD403220S | Portable electric drill | General | 25 | Expired |
| USD428786S | Portable electric saw | General | 25 | Expired |
| USD505055S1 | Portable electric impact driver | General | 23 | Expired |
| USD473771S1 | Portable electric saw | General | 22 | Expired |
| USD525849S1 | Portable electric hammer drill | General | 21 | Expired |
| USD631315S1 | Portable electric drill | General | 21 | Expired |
| USD636243S1 | Portable electric sander | General | 21 | Expired |
| USD478103S1 | Miter saw | General | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.