Inventor · disambiguated record
Ryozo Yamauchi
Also filed as: YAMAUCHI RYOZO
27 granted patents·655 citations·filing 1987–2005
97Inventor score
Files withFUJIKURA LTD25
Top patents by PatentIndex Score
27 records- 0195US5689578APolarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber couplerFUJIKURA LTD·Filed 1994·Granted Nov 18, 1997·71 cites·18 claims
- 0293US5267339AOptical fiber having a core with a repeatedly changing constitutional parameterFUJIKURA LTD·Filed 1992·Granted Nov 30, 1993·64 cites·12 claims
- 0389US7076139B1Optical fiber and optical transmission systemFUJIKURA LTD·Filed 2000·Granted Jul 11, 2006·43 cites·13 claims
- 0487US6535678B1Multimode optical fiber with a higher order mode removing functionFUJIKURA LTD·Filed 2000·Granted Mar 18, 2003·37 cites·20 claims
- 0586US5474588ASolution doping of a silica preform with erbium, aluminum and phosphorus to form an optical fiberFUJIKURA LTD·Filed 1994·Granted Dec 12, 1995·32 cites·6 claims
- 0685US6459829B1Multiple wavelength excitation optical multiplexing device, multiple wavelength excitation light source incorporating aforementioned device, and optical amplifierFiled 2000·Granted Oct 1, 2002·25 cites·4 claims
- 0778US6463195B1Method of manufacturing polarization-maintaining optical fiber couplerFUJIKURA LTD·Filed 2000·Granted Oct 8, 2002·21 cites·13 claims
- 0877US5732170AOptical fiber filterFUJIKURA LTD·Filed 1996·Granted Mar 24, 1998·47 cites·22 claims
- 0976US4834786AMethod of manufacturing a preform for asymmetrical optical fiberFUJIKURA LTD·Filed 1987·Granted May 30, 1989·21 cites·12 claims
- 1075US5995695ADispersion compensating optical fiberFUJIKURA LTD·Filed 1998·Granted Nov 30, 1999·42 cites·6 claims
- 1170US5949934AOptical waveguide grating and production method thereforFUJIKURA LTD·Filed 1997·Granted Sep 7, 1999·35 cites·8 claims
- 1269US5360464AMethod for splicing and reinforcing carbon coated optical fibersFUJIKURA LTD·Filed 1993·Granted Nov 1, 1994·27 cites·5 claims
- 1367US7496261B2Dispersion compensating optical fiber and dispersion compensating optical fiber moduleFUJIKURA LTD·Filed 2005·Granted Feb 24, 2009·4 cites·17 claims
- 1467US5930437AOptical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereofFUJIKURA LTD·Filed 1997·Granted Jul 27, 1999·31 cites·8 claims
- 1566US6442313B2Optical fiber grating and manufacturing method thereofFUJIKURA LTD·Filed 2001·Granted Aug 27, 2002·8 cites·6 claims
- 1665US7050672B1Polarization-maintaining optical fiber and polarization-maintaining optical fiber componentFUJIKURA LTD·Filed 2000·Granted May 23, 2006·10 cites·7 claims
- 1759US5996375AMethod of making an optical waveguide grating with two dissimilar irradiating stepsFiled 1997·Granted Dec 7, 1999·24 cites·4 claims
- 1857US6965719B2Dispersion compensating optical fiber and dispersion compensating optical fiber moduleFUJIKURA LTD·Filed 2002·Granted Nov 15, 2005·5 cites·1 claims
- 1957US5058979AOptical fiber coupler and a fabrication method for the sameFUJIKURA LTD·Filed 1990·Granted Oct 22, 1991·19 cites·13 claims
- 2054US4935045AMethod of manufacturing a preform for asymmetrical optical fiberFUJIKURA LTD·Filed 1989·Granted Jun 19, 1990·10 cites·11 claims
- 2153US6298183B1Optical fiber grating and manufacturing method thereforFUJIKURA LTD·Filed 1998·Granted Oct 2, 2001·14 cites·8 claims
- 2253US5526459AErbium-doped silica optical fiber preformFUJIKURA LTD·Filed 1995·Granted Jun 11, 1996·14 cites·8 claims
- 2352US5223014AMethod for splicing and reinforcing carbon coated optical fibersFUJIKURA LTD·Filed 1991·Granted Jun 29, 1993·14 cites·6 claims
- 2445US5066087AOptical fiber couplerFUJIKURA LTD·Filed 1990·Granted Nov 19, 1991·11 cites·10 claims
- 2544US5030265AOptical fiber coupler manufacturing deviceFUJIKURA LTD·Filed 1990·Granted Jul 9, 1991·11 cites·18 claims
- 2639US5024501AManufacturing method for polarization maintaining optical fiber couplersFUJIKURA LTD·Filed 1990·Granted Jun 18, 1991·8 cites·9 claims
- 2738US5848208AOptical-fiber coupler and manufacturing process thereforFUJIKURA LTD·Filed 1997·Granted Dec 8, 1998·7 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →