Inventor · disambiguated record
Tsukuru Katsuyama
Also filed as: KATSUYAMA TSUKURU
24 granted patents·9 pending applications·194 citations·filing 1991–2021
95Inventor score
Top patents by PatentIndex Score
33 records- 0182US6625187B1Semiconductor optical device and method of manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Sep 23, 2003·21 cites·14 claims
- 0280US7271422B2Semiconductor optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Sep 18, 2007·6 cites·16 claims
- 0377US9923337B2Quantum cascade laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Mar 20, 2018·2 cites·8 claims
- 0477US7405421B2Optical integrated deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Jul 29, 2008·8 cites·12 claims
- 0576US6690079B2Light-receiving deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Feb 10, 2004·20 cites·10 claims
- 0670US7356063B2Semiconductor surface emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Apr 8, 2008·8 cites·17 claims
- 0770US7208774B2Semiconductor optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Apr 24, 2007·4 cites·19 claims
- 0870US5663975AMulti-beam semiconductor laser with separated contacts characterized by semiconductor mixed crystal and active layerSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Sep 2, 1997·34 cites·22 claims
- 0968US7613217B2Semiconductor surface emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2008·Granted Nov 3, 2009·2 cites·18 claims
- 1067US9882347B2Quantum cascade laser arraySUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Jan 30, 2018·1 cites·5 claims
- 1166US7379485B2Semiconductor optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted May 27, 2008·2 cites·8 claims
- 1259US7838893B2Semiconductor optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Nov 23, 2010·1 cites·3 claims
- 1359US7323722B2Semiconductor optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Jan 29, 2008·1 cites·20 claims
- 1457US5276698ASemiconductor laser having an optical waveguide layer including an AlGaInP active layerSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Jan 4, 1994·15 cites·5 claims
- 1557US2021336417A1Optical apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Application pending·0 cites
- 1656US7149375B2Optical waveguide moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Dec 12, 2006·5 cites·11 claims
- 1756US5446537AMethod of sorting semiconductor lasersSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Aug 29, 1995·16 cites·10 claims
- 1853US7986721B2Semiconductor optical device including a PN junction formed by a second region of a first conductive type semiconductor layer and a second conductive type single semiconductor layerSUMITOMO ELECTRIC INDUSTRIES·Filed 2008·Granted Jul 26, 2011·0 cites·12 claims
- 1950US5479427ASemiconductor laser and method of manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Dec 26, 1995·13 cites·9 claims
- 2046US5359619AMulti-beam semiconductor laser and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Oct 25, 1994·10 cites·14 claims
- 2146US2020203932A1Semiconductor laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 2245US10277010B2Semiconductor laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Apr 30, 2019·0 cites·8 claims
- 2343US5586135ASemiconductor laser having an AlGaInP cladding layerSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Dec 17, 1996·8 cites·8 claims
- 2442US10312666B2Semiconductor laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Jun 4, 2019·0 cites·9 claims
- 2541US5617957AMethod of sorting semiconductor lasersSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Apr 8, 1997·9 cites·20 claims
- 2640US2004136427A1Semiconductor optical deviceFiled 2003·Application pending·0 cites
- 2740US2004057653A1Integrated optical element, integrated optical element fabrication method, and light source moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Application pending·0 cites
- 2840US2018261982A1Semiconductor laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 2939US5734671ASemiconductor laser diodeSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Mar 31, 1998·8 cites·7 claims
- 3039US2005220392A1Optical integrated deviceHASHIMOTO JUN-ICHI·Filed 2005·Application pending·0 cites
- 3138US2004119080A1Semiconductor optical deviceFiled 2003·Application pending·0 cites
- 3237US2018183213A1Semiconductor laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Application pending·0 cites
- 3336US2005220158A1Optical integrated deviceKOYAMA KENJI·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →