Inventor · disambiguated record
Masayuki Izutsu
Also filed as: IZUTSU MASAYUKI
34 granted patents·1 pending application·334 citations·filing 1986–2009
97Inventor score
Files withNAT INST INF & COMM TECH25COMM RES LAB INDEPENDENT ADMIN3KAWANISHI TETSUYA2SUMITOMO OSAKA CEMENT CO LTD2COMM RES LAB MINISTRY OF POSTS1
Top patents by PatentIndex Score
35 records- 0193US7239763B2Optical SSB modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2005·Granted Jul 3, 2007·19 cites·11 claims
- 0291US7245787B2Bias adjustment method for optical SSB modulator or optical FSK modulatorNAT INST INF & COMM TECH·Filed 2005·Granted Jul 17, 2007·20 cites·5 claims
- 0389US7957652B2Optical FSK/SSB modulator having intensity balance functionNAT INST INF & COMM TECH·Filed 2006·Granted Jun 7, 2011·17 cites·11 claims
- 0489US7957653B2Phase control optical FSK modulatorNAT INST INF & COMM TECH·Filed 2006·Granted Jun 7, 2011·17 cites·13 claims
- 0589US6970655B2Method and circuit for generating single-sideband optical signalNAT INST INF & COMM TECH·Filed 2002·Granted Nov 29, 2005·42 cites·14 claims
- 0687US7853153B2Fourth harmonic generating system using optical double side-band suppressed carrier modulatorNAT INST INF & COMM TECH·Filed 2006·Granted Dec 14, 2010·14 cites·7 claims
- 0787US7711215B2Optical amplitude modulation system capable of cancelling high order componentNAT INST INF & COMM TECH·Filed 2006·Granted May 4, 2010·10 cites·14 claims
- 0887US7689067B2Nested modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2007·Granted Mar 30, 2010·10 cites·4 claims
- 0984US8023775B2Super flat optical frequency comb signal generatorNAT INST INF & COMM TECH·Filed 2006·Granted Sep 20, 2011·8 cites·6 claims
- 1084US7936996B2Automatic adjusting system of frequency shift keying modulatorNAT INST INF & COMM TECH·Filed 2006·Granted May 3, 2011·8 cites·6 claims
- 1184US7425696B2Photoelectric oscillatorNAT INST INF & COMM TECH·Filed 2005·Granted Sep 16, 2008·8 cites·13 claims
- 1278US4674827ASlab-type optical deviceIZUTSU MASAYUKI·Filed 1986·Granted Jun 23, 1987·43 cites·3 claims
- 1377US8270780B2Optical switch system using optical interferenceKAWANISHI TETSUYA·Filed 2006·Granted Sep 18, 2012·5 cites·13 claims
- 1474US7212331B2Reciprocating optical modulatorNAT INST INF & COMM TECH·Filed 2005·Granted May 1, 2007·4 cites·2 claims
- 1573US7421209B2Optical wavelength multiplexing FSK modulation methodNAT INST INF & COMM TECH·Filed 2005·Granted Sep 2, 2008·5 cites·37 claims
- 1672US7864330B2Method and device for calibrating a light intensity measurement deviceNAT INST INF & COMM TECH·Filed 2006·Granted Jan 4, 2011·6 cites·4 claims
- 1772US4850666ASlab-type optical deviceOMRON TATEISI ELECTRONICS CO·Filed 1987·Granted Jul 25, 1989·28 cites·16 claims
- 1871US6304689B1General multi-function optical filterCOMM RES LAB MINISTRY OF POSTS·Filed 1999·Granted Oct 16, 2001·37 cites·17 claims
- 1966US7555223B2UWB signal generator using optical FSK modulatorNAT INST INF & COMM TECH·Filed 2005·Granted Jun 30, 2009·3 cites·8 claims
- 2065US8170422B2Frequency shift keying demodulatorKAWANISHI TETSUYA·Filed 2005·Granted May 1, 2012·3 cites·5 claims
- 2161US8005371B2Multi-wavelength signal generation device and multi-wavelength light generation methodNAT INST INF & COMM TECH·Filed 2005·Granted Aug 23, 2011·1 cites·13 claims
- 2261US7962039B2Multiple wavelength light source, and generation method for multiple wavelength lightNAT INST INF & COMM TECH·Filed 2005·Granted Jun 14, 2011·1 cites·8 claims
- 2360US6791733B2Resonance type optical modulator using symmetric or asymmetric electrodeNAT INST INF & COMM TECH·Filed 2002·Granted Sep 14, 2004·7 cites·23 claims
- 2457US6987904B2Variable-optical-delay apparatusNAT INST INF & COMM TECH·Filed 2003·Granted Jan 17, 2006·5 cites·9 claims
- 2556US7522844B2Multiple-wavelength optical modulation apparatusNAT INST INF & COMM TECH·Filed 2005·Granted Apr 21, 2009·1 cites·13 claims
- 2655US7526209B2Optical frequency shift keying modulatorNAT INST INF & COMM TECH·Filed 2004·Granted Apr 28, 2009·3 cites·12 claims
- 2754US7106497B2Low-noise optical frequency converterNAT INST INF & COMM TECH·Filed 2003·Granted Sep 12, 2006·4 cites·13 claims
- 2852US7236661B2Tunable dispersion compensation apparatusNAT INST INF & COMM TECH·Filed 2005·Granted Jun 26, 2007·2 cites·16 claims
- 2948US2011097029A1Super Flat Optical Frequency Comb Signal GeneratorNAT INST INF & COMM TECH·Filed 2009·Application pending·0 cites
- 3047US6788832B2Optical modulator and optical signal and electric wave signal converter using sameCOMM RES LAB INDEPENDENT ADMIN·Filed 2002·Granted Sep 7, 2004·2 cites·9 claims
- 3146US7660030B2Reciprocating optical modulation systemNAT INST INF & COMM TECH·Filed 2006·Granted Feb 9, 2010·0 cites·5 claims
- 3242US7991298B2DSB-SC modulation system capable of erasing carrier and secondary componentNAT INST INF & COMM TECH·Filed 2006·Granted Aug 2, 2011·0 cites·10 claims
- 3341US8014684B2Modulation light signal generating device and FSK modulation signal generating deviceNAT INST INF & COMM TECH·Filed 2005·Granted Sep 6, 2011·0 cites·6 claims
- 3439US6735010B2Resonator-type semiconductor optical modulator with asymmetrical electrode structureCOMM RES LAB INDEPENDENT ADMIN·Filed 2003·Granted May 11, 2004·0 cites·6 claims
- 3537US7084649B2Method and apparatus for measuring three-dimensional distribution of electric fieldCOMM RES LAB INDEPENDENT ADMIN·Filed 2003·Granted Aug 1, 2006·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →