Inventor · disambiguated record
Yoshiaki Tachikawa
Also filed as: TACHIKAWA YOSHIAKI
3 granted patents·261 citations·filing 1993–1998
78Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE3
Top patents by PatentIndex Score
3 records- 0191US5414548AArrayed-wave guide grating multi/demultiplexer with loop-back optical pathsNIPPON TELEGRAPH & TELEPHONE·Filed 1993·Granted May 9, 1995·151 cites·33 claims
- 0286US6157025ADisk shaped tunable optical filterNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Dec 5, 2000·76 cites·31 claims
- 0358US5905823APolarization independent optical nonreciprocal circuit based on even mode to odd mode conversionNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted May 18, 1999·34 cites·11 claims
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