Inventor · disambiguated record
Tsutomu Kitoh
Also filed as: KITOH TSUTOMU
18 granted patents·166 citations·filing 2001–2012
94Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE11SAIDA TAKASHI3KITOH TSUTOMU2MIZUNO TAKAYUKI1NTT ELECTRONICS CORP1
Top patents by PatentIndex Score
18 records- 0187US9306670B2Optical coupling/splitting device, two-way optical propagation device, and optical-transmit-receive systemNIPPON TELEGRAPH & TELEPHONE·Filed 2012·Granted Apr 5, 2016·9 cites·15 claims
- 0285US8483525B2Optical 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
- 0384US8787710B2Wideband interferometer type polarization light beam combiner and splitterMIZUNO TAKAYUKI·Filed 2010·Granted Jul 22, 2014·11 cites·16 claims
- 0484US8369666B2Optical wavelength multiplexing/ de-multiplexing circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2009·Granted Feb 5, 2013·15 cites·16 claims
- 0582US7085438B2Optical multi/demultiplexing circuit equipped with phase generating deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2003·Granted Aug 1, 2006·25 cites·41 claims
- 0682US6606433B2Optical multi/demultiplexerNIPPON TELEGRAPH & TELEPHONE·Filed 2001·Granted Aug 12, 2003·22 cites·16 claims
- 0778US7856163B2Planar lightwave circuit, design method for wave propagation circuit, and computer programNIPPON TELEGRAPH & TELEPHONE·Filed 2005·Granted Dec 21, 2010·6 cites·13 claims
- 0878US6937797B2Planar lightwave circuit and optical circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2001·Granted Aug 30, 2005·20 cites·31 claims
- 0977US7397977B2Wave transmission medium and waveguide circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2003·Granted Jul 8, 2008·20 cites·55 claims
- 1071US8463097B2Planar lightwave circuit, design method for wave propagation circuit, and computer programSAIDA TAKASHI·Filed 2010·Granted Jun 11, 2013·2 cites·18 claims
- 1171US6735358B2Optical multiplexer and optical demultiplexerNIPPON TELEGRAPH & TELEPHONE·Filed 2002·Granted May 11, 2004·10 cites·2 claims
- 1268US7590312B2Interferometer optical switch and variable optical attenuatorNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Granted Sep 15, 2009·11 cites·98 claims
- 1359US8737779B2Optical wavelength multi/demultiplexerKITOH TSUTOMU·Filed 2010·Granted May 27, 2014·1 cites·22 claims
- 1459US7580597B2Optical functional circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2005·Granted Aug 25, 2009·2 cites·12 claims
- 1553US8554040B2Planar lightwave circuit, design method for wave propagation circuit, and computer programSAIDA TAKASHI·Filed 2012·Granted Oct 8, 2013·0 cites·8 claims
- 1653US8538222B2Planar lightwave circuit, design method for wave propagation circuit, and computer programSAIDA TAKASHI·Filed 2012·Granted Sep 17, 2013·0 cites·8 claims
- 1746US7400800B2Arrayed waveguide grating type optical multiplexer/demultiplexer circuitNTT ELECTRONICS CORP·Filed 2003·Granted Jul 15, 2008·2 cites·2 claims
- 1845US9116305B2Arrayed waveguide grating, optical module provided with said arrayed waveguide grating, and optical communications systemNIPPON TELEGRAPH & TELEPHONE·Filed 2012·Granted Aug 25, 2015·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →