Yuji Ohkura
11Patents
6h-index
19Co-inventors
59Inventor score
Filing activity: Jul 7, 1988 → Aug 10, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5800622A | Vapor-phase growth apparatus and compound semiconductor device fabricated thereby | Electricity | 34 | Expired |
| US4847857A | Single wavelength semiconductor laser | Electricity | 15 | Expired |
| US5835516A | Semiconductor laser device and method of fabricating semiconductor laser device | Electricity | 15 | Expired |
| US5602414A | Infrared detector having active regions and isolating regions formed of CdHgTe | Electricity | 10 | Expired |
| US5238785A | Method of manufacturing a diffraction grating for a semiconductor laser | Electricity | 9 | Expired |
| US5386433A | Semiconductor laser including periodic structures with different periods for producing a single wavelength of light | Electricity | 6 | Expired |
| US6333946A | Semiconductor laser device and process for manufacturing the same | Electricity | 6 | Expired |
| US6154476A | Semiconductor laser diode | Electricity | 5 | Expired |
| US5198370A | Method for producing an infrared detector | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5887011A | Semiconductor laser | Electricity | 4 | Expired |
| US5706304A | Semiconductor laser device | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.