Akihito Hara
19Patents
12h-index
25Co-inventors
78Inventor score
Filing activity: Apr 23, 1990 → Feb 11, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6983810B2 | Electric power tool with improved speed change gearing | Performing Operations; Transporting | 61 | Expired |
| US7121361B2 | Electric power tool with improved speed change gearing | Performing Operations; Transporting | 49 | Expired |
| US6159085A | Structure for use in a power driven tool for collecting dust generated by the operation of the tool | Performing Operations; Transporting | 46 | Expired |
| US7137761B2 | Right angle drill with an improved structure for accommodating a light assembly | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5118023A | Two-stage returning mechanism | Performing Operations; Transporting | 37 | Expired |
| US6616295B2 | Lighting devices for power tools | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5711379A | Hammer drill | Performing Operations; Transporting | 28 | Expired |
| US6886961B2 | Power tools having wire guides for lights | Emerging Cross-Sectional Technologies | 21 | Expired |
| USD330836S | Electrically-operated tacker | General | 20 | Expired |
| US5004140A | Electrically-operated tacker | Performing Operations; Transporting | 20 | Expired |
| US7334646B2 | Electric power tool with improved speed change gearing | Performing Operations; Transporting | 19 | Active |
| USD400073S | Portable electric belt sander | General | 14 | Expired |
| USD340630S | Electric stapler | General | 12 | Expired |
| US6447383B2 | Sanding apparatus with an improved vibration insulating mechanism | Performing Operations; Transporting | 10 | Expired |
| US5860854A | Belt sander with a lateral drift prevention device | Performing Operations; Transporting | 9 | Expired |
| US5543682A | Cathode assembly incorporating a black layer formed from particles having a specified average particle size | Electricity | 5 | Expired |
| US5762997A | Method of manufacturing a cathode assembly | Electricity | 2 | Expired |
| US11396055B2 | Reciprocating tool | Emerging Cross-Sectional Technologies | 1 | Active |
| US10914422B2 | Grease discharge device | Mechanical Engineering; Lighting; Heating | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.