Inventor · disambiguated record
Yasutaka Sakata
Also filed as: SAKATA YASUTAKA
25 granted patents·5 pending applications·424 citations·filing 1992–2015
97Inventor score
Files withNEC CORP21NEC ELECTRONICS CORP2NEC COMPOUND CONDUCTOR DEVICES1RENESAS ELECTRONIC CORP1SONY CORP1
Top patents by PatentIndex Score
30 records- 0187US5891748ASemiconductor optical waveguide and method of fabricating the sameNEC CORP·Filed 1997·Granted Apr 6, 1999·71 cites·6 claims
- 0280US10303306B2Projection display unitSONY CORP·Filed 2015·Granted May 28, 2019·3 cites·21 claims
- 0379US5565693ASemiconductor optical integrated circuitsNEC CORP·Filed 1994·Granted Oct 15, 1996·34 cites·15 claims
- 0478US6383829B1Optical semiconductor device and method of fabricating the sameNEC CORP·Filed 2000·Granted May 7, 2002·17 cites·18 claims
- 0578US6134368AOptical semiconductor device with a current blocking structure and method for making the sameNEC CORP·Filed 1997·Granted Oct 17, 2000·46 cites·9 claims
- 0676US6707839B1Optical semiconductor device and process for producing the sameNEC CORP·Filed 2000·Granted Mar 16, 2004·11 cites·4 claims
- 0771US5770466ASemiconductor optical integrated circuits and method for fabricating the sameNEC CORP·Filed 1995·Granted Jun 23, 1998·32 cites·28 claims
- 0869US5790580ASemiconductor optical integrated deviceNEC CORP·Filed 1997·Granted Aug 4, 1998·34 cites·39 claims
- 0969US5678935ASemiconductor optical waveguide and method of fabricating the sameNEC CORP·Filed 1996·Granted Oct 21, 1997·28 cites·6 claims
- 1064US6391671B2Method of producing an optical semiconductor device having a waveguide layer buried in an InP current blocking layerNEC CORP·Filed 2001·Granted May 21, 2002·6 cites·13 claims
- 1160US7633986B2Distributed feedback laser diodeNEC ELECTRONICS CORP·Filed 2007·Granted Dec 15, 2009·1 cites·2 claims
- 1260US6167070AOptical semiconductor device and method of fabricating the sameNEC CORP·Filed 1997·Granted Dec 26, 2000·18 cites·20 claims
- 1359US7083995B2Optical semiconductor device and process for producing the sameNEC ELECTRONICS CORP·Filed 2004·Granted Aug 1, 2006·4 cites·6 claims
- 1458US5847415ALight emitting device having current blocking structureNEC CORP·Filed 1996·Granted Dec 8, 1998·18 cites·12 claims
- 1557US6100543AElectro-absorption type semiconductor optical modulator having a quantum well structureNEC CORP·Filed 1997·Granted Aug 8, 2000·24 cites·1 claims
- 1655US5284791AMethod of making tunable semiconductor laserNEC CORP·Filed 1992·Granted Feb 8, 1994·16 cites·1 claims
- 1752US7920613B2Optical semiconductor device and method of manufacturing sameRENESAS ELECTRONIC CORP·Filed 2008·Granted Apr 5, 2011·0 cites·3 claims
- 1852US6399404B2Fabricating method of optical semiconductor deviceNEC CORP·Filed 1999·Granted Jun 4, 2002·16 cites·33 claims
- 1949US6828589B2Optical semiconductor device and method for manufacturing the sameNEC COMPOUND CONDUCTOR DEVICES·Filed 2003·Granted Dec 7, 2004·3 cites·19 claims
- 2046US5580818AFabrication process for semiconductor optical deviceNEC CORP·Filed 1995·Granted Dec 3, 1996·12 cites·4 claims
- 2142US6222867B1Optical semiconductor device having waveguide layers buried in an InP current blocking layerNEC CORP·Filed 1998·Granted Apr 24, 2001·9 cites·8 claims
- 2242US2002101897A1Laser elements having different wavelengths formed from one semiconductor substrateFiled 2002·Application pending·0 cites
- 2341US2001005391A1Laser elements having different wavelengths formed from one semiconductor substrateNEC CORP·Filed 2000·Application pending·0 cites
- 2441US2002042155A1Optical semiconductor device having active layer and carrier recombination layer different from each otherFiled 2001·Application pending·0 cites
- 2540US2001019568A1Optical semiconductor device and method for manufacturing the sameFiled 2001·Application pending·0 cites
- 2639US6036771AMethod of manufacturing optical semiconductor deviceNEC CORP·Filed 1998·Granted Mar 14, 2000·7 cites·13 claims
- 2737US5756373AMethod for fabricating optical semiconductor deviceNEC CORP·Filed 1996·Granted May 26, 1998·6 cites·18 claims
- 2837US2002003914A1Optical semiconductor device, method for manufacturing the same, and optical module and optical communication apparatus provided with the optical semiconductor deviceFiled 2001·Application pending·0 cites
- 2936US5913107APhotosemiconductor device and method of fabricating the sameNEC CORP·Filed 1998·Granted Jun 15, 1999·5 cites·10 claims
- 3033US6350629B1Optical semiconductor device having active layer and carrier recombination layer different from each otherNEC CORP·Filed 1999·Granted Feb 26, 2002·3 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →