Ryuji Hamada
20Patents
4h-index
40Co-inventors
63Inventor score
Filing activity: Jan 31, 1995 → Aug 4, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7438768B2 | Rare earth element sintered magnet and method for producing rare earth element sintered magnet | Electricity | 9 | Expired |
| US9664100B2 | Outboard motor | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US7115009B2 | Outboard motor | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5636544A | Cold rolling method for a metal strip and a mill array | Performing Operations; Transporting | 4 | Expired |
| US6777097B2 | Corrosion resistant rare earth magnet and its preparation | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8224063B2 | Inspection apparatus and inspection method | Physics | 4 | Active |
| US6746545B2 | Preparation of rare earth permanent magnets | Electricity | 3 | Expired |
| US8074351B2 | Part mounting device and part mounting method | Emerging Cross-Sectional Technologies | 3 | Active |
| US6224986A | Rare earth permanent magnet of high corrosion resistance | Electricity | 3 | Expired |
| US7156928B2 | Corrosion-resistant rare earth element magnet | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6216505A | Method and apparatus for rolling a strip | Performing Operations; Transporting | 2 | Expired |
| US9780514B2 | Component mounting method | Emerging Cross-Sectional Technologies | 2 | Active |
| US9816423B2 | Engine for outboard motor | Emerging Cross-Sectional Technologies | 1 | Active |
| US9909479B2 | Engine for outboard motor | Emerging Cross-Sectional Technologies | 1 | Active |
| US10059416B2 | Engine for outboard motor | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US8221551B2 | Apparatus for producing a reflector | Physics | 0 | Active |
| US10625321B2 | Cooling apparatus and cooling method for steel material | Chemistry; Metallurgy | 0 | Active |
| US9938879B2 | Outboard motor | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9982594B2 | Engine for outboard motor | Emerging Cross-Sectional Technologies | 0 | Active |
| US8405715B2 | Inspection apparatus and inspection method | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.