Akira Fujisaki
25Patents
9h-index
28Co-inventors
75Inventor score
Filing activity: Mar 25, 1985 → Nov 16, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5883736A | Er-doped optical fiber amplifier | Electricity | 76 | Expired |
| US5379357A | Method and apparatus for polarized optical telecommunications using ultrasonic modulation means | Electricity | 32 | Expired |
| US6768577B2 | TUNABLE MULTIMODE LASER DIODE MODULE, TUNABLE MULTIMODE WAVELENGTH DIVISION MULTIPLEX RAMAN PUMP, AND AMPLIFIER, AND A SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR CONTROLLING TUNABLE MULTIMODE LASER DIODES, RAMAN PUMPS, AND RAMAN AMPLIFIERS | Electricity | 32 | Expired |
| US5329348A | Method of identifying a particular optical cable out of a number of similar optical cables | Physics | 23 | Expired |
| US6949860B2 | Electric motor | Electricity | 22 | Expired |
| US5202746A | Method and apparatus for identifying an optical transmission medium | Electricity | 21 | Expired |
| US5457998A | Method of detecting an optical transmission line | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7187153B2 | Motor-driven power steering apparatus | Electricity | 19 | Expired |
| US4614929A | Method for manufacture of magnet | Electricity | 15 | Expired |
| US8811434B2 | Fiber laser apparatus and method of detecting failure of fiber laser apparatus | Electricity | 6 | Active |
| US6745865B2 | Electric motor apparatus | Electricity | 6 | Expired |
| US7392879B2 | Motor-driven power steering apparatus | Electricity | 5 | Active |
| US6799655B2 | Electric power steering apparatus | Electricity | 3 | Expired |
| US5331392A | Method of identifying an optical cable | Physics | 3 | Expired |
| US5576871A | Method for optical communications | Electricity | 3 | Expired |
| US8064742B2 | Light input/output terminal module of the optical components and beam converting apparatus | Physics | 3 | Active |
| US9343865B2 | Laser device | Electricity | 1 | Active |
| US6933637B2 | Electric motor | Electricity | 1 | Expired |
| US6924578B2 | Electric motor | Electricity | 1 | Expired |
| US9190802B2 | Optical fiber laser equipment | Electricity | 1 | Active |
| US10141708B2 | Fiber laser apparatus and method of aligning laser light irradiation position | Electricity | 0 | Active |
| US5170449A | Converting device using an optical fiber | Physics | 0 | Expired |
| US11171462B2 | Fiber laser apparatus | Electricity | 0 | Active |
| US7741743B2 | Feeder line drawing structure of motor for ship propeller | Electricity | 0 | Active |
| US6946770B2 | Electric motor | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.