Inventor · disambiguated record
Keiro Komatsu
Also filed as: KOMATSU KEIRO
16 granted patents·1 pending application·597 citations·filing 1987–2015
95Inventor score
Top patents by PatentIndex Score
17 records- 0190US5825047AOptical semiconductor deviceNEC CORP·Filed 1994·Granted Oct 20, 1998·119 cites·46 claims
- 0288US6192170B1Multiple-wavelength light source and method of controlling oscillation frequencies thereofNEC CORP·Filed 1999·Granted Feb 20, 2001·108 cites·12 claims
- 0381US6278170B1Semiconductor multiple quantum well mach-zehnder optical modulator and method for fabricating the sameNEC CORP·Filed 1996·Granted Aug 21, 2001·69 cites·5 claims
- 0479US5841929ALight wavelength filtering circuit and manufacturing method thereofNEC CORP·Filed 1996·Granted Nov 24, 1998·56 cites·14 claims
- 0579US5565693ASemiconductor optical integrated circuitsNEC CORP·Filed 1994·Granted Oct 15, 1996·34 cites·15 claims
- 0678US10379069B2Magnetism measuring deviceRENESAS ELECTRONICS CORP·Filed 2015·Granted Aug 13, 2019·4 cites·16 claims
- 0771US5770466ASemiconductor optical integrated circuits and method for fabricating the sameNEC CORP·Filed 1995·Granted Jun 23, 1998·32 cites·28 claims
- 0869US5334551AMethod of making semiconductor optical guided-wave deviceNEC CORP·Filed 1992·Granted Aug 2, 1994·29 cites·5 claims
- 0968US5358896AMethod of producing optical integrated circuitNEC CORP·Filed 1992·Granted Oct 25, 1994·31 cites·3 claims
- 1068US5237639AOptical waveguide formed of compound semiconductor materials and process of fabricating the optical waveguideNEC CORP·Filed 1992·Granted Aug 17, 1993·27 cites·19 claims
- 1164US5521994ASemiconductor optical waveguide-integrated light-receiving deviceNEC CORP·Filed 1995·Granted May 28, 1996·30 cites·12 claims
- 1257US5796883AOptical integrated circuit and method for fabricating the sameNEC CORP·Filed 1996·Granted Aug 18, 1998·22 cites·38 claims
- 1345US5381023ASemiconductor device for control of a signal lightNEC CORP·Filed 1993·Granted Jan 10, 1995·12 cites·3 claims
- 1443US5119449AOptical directional coupler switchNEC CORP·Filed 1990·Granted Jun 2, 1992·11 cites·3 claims
- 1543US2010034231A1Semiconductor laserNEC ELECTRONICS CORP·Filed 2009·Application pending·0 cites
- 1642US5455433ASemiconductor optical guided-wave deviceNEC CORP·Filed 1994·Granted Oct 3, 1995·8 cites·6 claims
- 1735US4795241ADevice and method for providing optical bistability with free carrier recombination centers introduced into an optical guide surrounding semiconductor layer portionNEC CORP·Filed 1987·Granted Jan 3, 1989·5 cites·6 claims
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