Masami Iwamoto
22Patents
10h-index
24Co-inventors
75Inventor score
Filing activity: Apr 3, 1974 → Sep 30, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD539943S1 | Light emitting diode lamp | General | 64 | Expired |
| USD539944S1 | Light emitting diode lamp | General | 55 | Expired |
| USD539945S1 | Light emitting diode lamp | General | 36 | Expired |
| US6354674B1 | Hydraulic control apparatus integrated with motor driving circuit unit | Performing Operations; Transporting | 34 | Expired |
| USD522975S1 | Light emitting diode module | General | 31 | Expired |
| US7156009B2 | Die device | Emerging Cross-Sectional Technologies | 26 | Expired |
| USD550868S1 | Light emitting diode lamp | General | 17 | Expired |
| US6719267B2 | Magnet valve and fluid control apparatus using the same | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6029486A | Forming method, forming tools and elastic punch | Performing Operations; Transporting | 11 | Expired |
| US5922126A | Semiconductor liquid phase epitaxial growth method and apparatus, and its wafer holder | Chemistry; Metallurgy | 11 | Expired |
| US6189361A | Tool for forming protrusions in material by cutting and deforming | Performing Operations; Transporting | 9 | Expired |
| US7007582B2 | Die device | Emerging Cross-Sectional Technologies | 9 | Expired |
| USD563595S1 | Lens for light emitting diode | General | 9 | Expired |
| US7561999B2 | Verification apparatus, verification method, and program | Physics | 7 | Expired |
| US3951700A | Method of manufacturing a gallium phosphide light-emitting device | Electricity | 6 | Expired |
| US4224632A | Green light emitting device | Electricity | 5 | Expired |
| US3935039A | Method of manufacturing a green light-emitting gallium phosphide device | Electricity | 4 | Expired |
| US6260394A | Forming method, forming tools and elastic punch | Performing Operations; Transporting | 3 | Expired |
| US8250545B2 | Associated apparatus and method for supporting development of semiconductor device | Physics | 3 | Active |
| US10071455B2 | Tool measuring apparatus | Performing Operations; Transporting | 2 | Active |
| US4417262A | Green light emitting device | Electricity | 2 | Expired |
| US6825705B2 | Clock signal generation circuit and audio data processing apparatus | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.