Shiro Ryu
16Patents
9h-index
10Co-inventors
69Inventor score
Filing activity: Oct 17, 1988 → Sep 24, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5793512A | Optical communication system | Electricity | 43 | Expired |
| US4984884A | Method for measuring dispersion characteristics of an optical fiber | Physics | 29 | Expired |
| US5940197A | Optical add-drop device | Electricity | 27 | Expired |
| US5387992A | Optical frequency multiplex carrier control system | Electricity | 27 | Expired |
| US6185020A | Apparatus for detecting a fault location in an optical fiber line | Electricity | 22 | Expired |
| US5463461A | Coherent optical receiver having optically amplified local oscillator signal | Electricity | 19 | Expired |
| US4977564A | Controller for semiconductor laser light source | Electricity | 12 | Expired |
| US4888817A | Polarization diversity light receiving system using baseband combining | Electricity | 11 | Expired |
| US5898719A | Optical frequency stabilizer | Electricity | 10 | Expired |
| US6201599A | Optical transmission line monitoring apparatus | Electricity | 9 | Expired |
| US5317382A | Optical phase detection method with orthogonal polarization and phase compensation arrangement | Electricity | 8 | Expired |
| US5140452A | Long-distance high-speed optical communication scheme | Electricity | 6 | Expired |
| US6493074B1 | Method and apparatus for measuring an optical transfer characteristic | Physics | 3 | Expired |
| US5912756A | Light receiving device | Electricity | 2 | Expired |
| US12375178B2 | Control device, compensation device, program, and control method | Electricity | 0 | Active |
| US12341555B2 | Detection device, optical reception device, optical communication system, program, and detection method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.