Noboru Edagawa
59Patents
19h-index
35Co-inventors
80Inventor score
Filing activity: Jul 15, 1988 → Oct 13, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5786918A | Optical communication system and optical transmitting device | Electricity | 99 | Expired |
| US6005702A | Optical transmission device, WDM optical transmission apparatus, and optical transmission system using return-to-zero optical pulses | Electricity | 79 | Expired |
| US6532091B1 | Optical digital regenerator | Electricity | 49 | Expired |
| US5589969A | Wavelength division multiplexed optical fiber transmission equipment | Electricity | 42 | Expired |
| US5710660A | Gain-controllable optical amplifier and optical gain-control method | Electricity | 37 | Expired |
| US4923291A | Optical amplification | Electricity | 36 | Expired |
| US5559910A | Wavelength division multiplexed optical fiber transmission equiptment | Electricity | 35 | Expired |
| US5625479A | Soliton optical communication system and optical transmitter and optical receiver therefor | Electricity | 34 | Expired |
| US5629795A | Optical amplifying-repeating transmission system | Electricity | 32 | Expired |
| US5642215A | Optical transmission system | Electricity | 30 | Expired |
| US6236488A | Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods | Electricity | 30 | Expired |
| US5042039A | Er-doped optical fiber laser device | Electricity | 26 | Expired |
| US4899043A | Fault monitoring system for optical fiber communication systems | Electricity | 23 | Expired |
| US5959764A | Wavelength converter, optically operational device and optical pulse phase detecting circuit | Electricity | 22 | Expired |
| US5162936A | Apparatus for monitoring the operation of an optical repeater | Electricity | 21 | Expired |
| US5574590A | Optical amplifying transmitting system | Electricity | 21 | Expired |
| US6775478B2 | Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converter | Electricity | 20 | Expired |
| US6115173A | Optical amplifying transmission system and optical amplifier | Electricity | 20 | Expired |
| US6091538A | Gain equalizing apparatus | Electricity | 20 | Expired |
| US6459518B1 | Optical transmitting apparatus | Electricity | 19 | Expired |
| US6021235A | Wavelength-division multiplexing optical transmission system | Electricity | 19 | Expired |
| US4972513A | Multi-point optical amplification repeating system | Electricity | 18 | Expired |
| US5838477A | Optical submarine branching device | Physics | 18 | Expired |
| US5872647A | Optical transmitting terminal | Electricity | 17 | Expired |
| US5898714A | Optical pulse generator | Electricity | 17 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.