Haruki Ogoshi
12Patents
8h-index
16Co-inventors
69Inventor score
Filing activity: Mar 2, 1990 → Feb 26, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5883736A | Er-doped optical fiber amplifier | Electricity | 76 | Expired |
| US6333803A | Optical transmitter | Electricity | 69 | Expired |
| US5965874A | Method and apparatus for measuring the polarization characteristics of optical transmission medium | Physics | 32 | Expired |
| US5379357A | Method and apparatus for polarized optical telecommunications using ultrasonic modulation means | Electricity | 32 | Expired |
| US5933552A | Optical filter, manufacturing method thereof and optical amplifier equipped with said optical filter | Electricity | 25 | Expired |
| US6411430B1 | Optical amplifier | Electricity | 22 | Expired |
| US5202746A | Method and apparatus for identifying an optical transmission medium | Electricity | 21 | Expired |
| US6198570A | Optical filter, manufacturing method thereof, and optical amplifier equipped with said optical filter | Electricity | 9 | Expired |
| US5808768A | Optical telecommunications system | Electricity | 8 | Expired |
| US6028698A | High-output and low-noise optical fiber amplifier | Electricity | 5 | Expired |
| US10938175B2 | Light source for Raman amplification, light source system for Raman amplification, Raman amplifier, and Raman amplifying system | Electricity | 1 | Active |
| US11652329B2 | Light source for Raman amplification, light source system for Raman amplification, Raman amplifier, and Raman amplifying system | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.