Ako Hatano
16Patents
12h-index
5Co-inventors
67Inventor score
Filing activity: Sep 29, 1989 → Jul 27, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5929466A | Semiconductor device and method of fabricating the same | Electricity | 110 | Expired |
| US5432808A | Compound semicondutor light-emitting device | Electricity | 108 | Expired |
| US5656832A | Semiconductor heterojunction device with ALN buffer layer of 3nm-10nm average film thickness | Electricity | 90 | Expired |
| US5998810A | Semiconductor light-emitting diode having a p-type semiconductor layer formed on a light-emitting layer | Electricity | 83 | Expired |
| US5103271A | Semiconductor light emitting device and method of fabricating the same | Electricity | 78 | Expired |
| US5042043A | Semiconductor laser using five-element compound semiconductor | Electricity | 67 | Expired |
| US5005057A | Semiconductor light-emitting diode and method of manufacturing the same | Electricity | 61 | Expired |
| US5076860A | AlGaN compound semiconductor material | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5740192A | Semiconductor laser | Electricity | 51 | Expired |
| US5079184A | Method of manufacturing III-IV group compound semiconductor device | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5273933A | Vapor phase growth method of forming film in process of manufacturing semiconductor device | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5909040A | Semiconductor device including quaternary buffer layer with pinholes | Electricity | 23 | Expired |
| US5235194A | Semiconductor light-emitting device with InGaAlP | Electricity | 10 | Expired |
| US5617438A | Semiconductor laser and method for manufacturing the same | Electricity | 10 | Expired |
| US5317167A | Semiconductor light-emitting device with InGaAlp | Electricity | 5 | Expired |
| USRE38805E1 | Semiconductor device and method of fabricating the same | General | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.