Inventor · disambiguated record
Yohei Sakamaki
Also filed as: SAKAMAKI YOHEI
14 granted patents·84 citations·filing 2005–2019
90Inventor score
Top patents by PatentIndex Score
14 records- 0189US7899279B2Optical delay line interferometerNIPPON TELEGRAPH & TELEPHONE·Filed 2009·Granted Mar 1, 2011·23 cites·23 claims
- 0287US8150219B2Waveguide-type optical interferometerNASU YUSUKE·Filed 2007·Granted Apr 3, 2012·24 cites·13 claims
- 0385US8483525B2Optical wavelength multiplexing/demultiplexing circuit, optical module using optical wavelength multiplexing/demultiplexing circuit, and communication systemKITOH TSUTOMU·Filed 2010·Granted Jul 9, 2013·10 cites·17 claims
- 0479US8588560B2Optical 90-degree hybrid circuitSAKAMAKI YOHEI·Filed 2010·Granted Nov 19, 2013·6 cites·4 claims
- 0578US7856163B2Planar lightwave circuit, design method for wave propagation circuit, and computer programNIPPON TELEGRAPH & TELEPHONE·Filed 2005·Granted Dec 21, 2010·6 cites·13 claims
- 0675US8467635B2Optical modulatorDOI YOSHIYUKI·Filed 2009·Granted Jun 18, 2013·5 cites·12 claims
- 0772US8971677B2Optical 90-degree hybrid circuitSAKAMAKI YOHEI·Filed 2010·Granted Mar 3, 2015·4 cites·6 claims
- 0871US8463097B2Planar lightwave circuit, design method for wave propagation circuit, and computer programSAIDA TAKASHI·Filed 2010·Granted Jun 11, 2013·2 cites·18 claims
- 0965US8649640B2Optical 90-degree hybrid circuitSAKAMAKI YOHEI·Filed 2010·Granted Feb 11, 2014·1 cites·4 claims
- 1059US8737779B2Optical wavelength multi/demultiplexerKITOH TSUTOMU·Filed 2010·Granted May 27, 2014·1 cites·22 claims
- 1159US7580597B2Optical functional circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2005·Granted Aug 25, 2009·2 cites·12 claims
- 1253US8554040B2Planar lightwave circuit, design method for wave propagation circuit, and computer programSAIDA TAKASHI·Filed 2012·Granted Oct 8, 2013·0 cites·8 claims
- 1353US8538222B2Planar lightwave circuit, design method for wave propagation circuit, and computer programSAIDA TAKASHI·Filed 2012·Granted Sep 17, 2013·0 cites·8 claims
- 1448US12181737B2Optical switching apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 31, 2024·0 cites·13 claims
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