Ryuzo Iga
10Patents
4h-index
10Co-inventors
53Inventor score
Filing activity: Apr 10, 1990 → Sep 30, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6815786B2 | Semiconductor optical device and method of manufacturing the same | Electricity | 16 | Expired |
| US6717187B2 | Semiconductor optical device and the fabrication method | Electricity | 6 | Expired |
| US5273932A | Method for forming semiconductor thin films where an argon laser is used to suppress crystal growth | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5186750A | Method and apparatus for forming semiconductor thin films | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7701993B2 | Semiconductor optical device and a method of fabricating the same | Electricity | 4 | Expired |
| US6692837B2 | Semi-insulating substrate, semiconductor optical device and fabrication method of semiconductor thin film | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6990131B2 | Semiconductor optical device and method of manufacturing the same | Electricity | 3 | Expired |
| US7355778B2 | Semiconductor optical modulator | Physics | 3 | Expired |
| US6982469B2 | Semiconductor optical device and the fabrication method | Electricity | 2 | Expired |
| US7060518B2 | Semiconductor optical device and the fabrication method | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.