Inventor · disambiguated record
Shigefumi Yamasaki
Also filed as: YAMASAKI SHIGEFUMI
7 granted patents·156 citations·filing 1994–2001
87Inventor score
Files withFUJIKURA LTD6
Top patents by PatentIndex Score
7 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
- 0285US6459829B1Multiple 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
- 0378US6463195B1Method of manufacturing polarization-maintaining optical fiber couplerFUJIKURA LTD·Filed 2000·Granted Oct 8, 2002·21 cites·13 claims
- 0466US6442313B2Optical fiber grating and manufacturing method thereofFUJIKURA LTD·Filed 2001·Granted Aug 27, 2002·8 cites·6 claims
- 0565US7050672B1Polarization-maintaining optical fiber and polarization-maintaining optical fiber componentFUJIKURA LTD·Filed 2000·Granted May 23, 2006·10 cites·7 claims
- 0653US6298183B1Optical fiber grating and manufacturing method thereforFUJIKURA LTD·Filed 1998·Granted Oct 2, 2001·14 cites·8 claims
- 0738US5848208AOptical-fiber coupler and manufacturing process thereforFUJIKURA LTD·Filed 1997·Granted Dec 8, 1998·7 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Shigefumi Yamasaki files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →