Inventor · disambiguated record
Tomonobu Tsuchiya
Also filed as: TSUCHIYA TOMONOBU
30 granted patents·2 pending applications·400 citations·filing 1990–2018
97Inventor score
Files withHITACHI LTD14OPNEXT JAPAN INC8HITACHI HIGH TECH CORP2USHIO ELECTRIC INC2HITACHI METALS LTD1
Top patents by PatentIndex Score
32 records- 0193US6700910B1Wavelength tunable laser and optical deviceHITACHI LTD·Filed 2000·Granted Mar 2, 2004·54 cites·12 claims
- 0292US5119393ASemiconductor laser device capable of controlling wavelength shiftHITACHI LTD·Filed 1990·Granted Jun 2, 1992·81 cites·21 claims
- 0386US5177758ASemiconductor laser device with plural active layers and changing optical propertiesHITACHI LTD·Filed 1991·Granted Jan 5, 1993·54 cites·36 claims
- 0484US11062892B2Charged particle detector including a light-emitting section having lamination structure, charged particle beam device, and mass spectrometerHITACHI HIGH TECH CORP·Filed 2017·Granted Jul 13, 2021·3 cites·10 claims
- 0584US7340142B1Integrated optoelectronic device and method of fabricating the sameOPNEXT JAPAN INC·Filed 2007·Granted Mar 4, 2008·8 cites·14 claims
- 0684US6821801B1Manufacturing method of semiconductor laser diodeHITACHI LTD·Filed 2004·Granted Nov 23, 2004·20 cites·15 claims
- 0780US7583714B2Vertical cavity surface emitting semiconductor laser deviceOPNEXT JAPAN INC·Filed 2007·Granted Sep 1, 2009·6 cites·6 claims
- 0879US7329894B2Semiconductor laser device and semiconductor optical modulatorOPNEXT JAPAN INC·Filed 2005·Granted Feb 12, 2008·6 cites·22 claims
- 0979US6989550B2Distributed feedback semiconductor laser equipment employing a gratingOPNEXT JAPAN INC·Filed 2003·Granted Jan 24, 2006·15 cites·22 claims
- 1074US8068526B2Semiconductor optical deviceMAKINO SHIGEKI·Filed 2009·Granted Nov 29, 2011·5 cites·17 claims
- 1174US7514349B2Semiconductor optical device and manufacturing method thereofOPNEXT JAPAN INC·Filed 2006·Granted Apr 7, 2009·5 cites·5 claims
- 1274US6606443B2Optical transmission deviceHITACHI LTD·Filed 2002·Granted Aug 12, 2003·11 cites·5 claims
- 1372US8896027B2Nitride semiconductor diodeHITACHI LTD·Filed 2012·Granted Nov 25, 2014·3 cites·10 claims
- 1471US5132981ASemiconductor optical deviceHITACHI LTD·Filed 1990·Granted Jul 21, 1992·31 cites·22 claims
- 1568US5844931ASemiconductor laser devicesHITACHI LTD·Filed 1997·Granted Dec 1, 1998·36 cites·36 claims
- 1667US9530858B2Nitride semiconductor device and method of manufacturing the sameSUMITOMO CHEMICAL CO·Filed 2014·Granted Dec 27, 2016·2 cites·16 claims
- 1766US8124432B2Nitride semiconductor optical element and manufacturing method thereofTSUCHIYA TOMONOBU·Filed 2009·Granted Feb 28, 2012·4 cites·9 claims
- 1864US7596160B2Nitride semiconductor lasers and its manufacturing methodOPNEXT JAPAN INC·Filed 2007·Granted Sep 29, 2009·2 cites·14 claims
- 1960US6853015B2Optical semiconductor device including InGaAlAs doped with ZnHITACHI LTD·Filed 2002·Granted Feb 8, 2005·7 cites·22 claims
- 2054US7038233B2Semiconductor optical devices and optical modulesOPNEXT JAPAN INC·Filed 2004·Granted May 2, 2006·3 cites·14 claims
- 2151US5572616AWaveguide deviceHITACHI LTD·Filed 1995·Granted Nov 5, 1996·12 cites·15 claims
- 2249US10984979B2Charged particle detector and charged particle beam apparatusHITACHI HIGH TECH CORP·Filed 2018·Granted Apr 20, 2021·0 cites·5 claims
- 2348US6459840B1Optical transmission deviceHITACHI LTD·Filed 1999·Granted Oct 1, 2002·12 cites·15 claims
- 2448US5073892ASemiconductor laser deviceHITACHI LTD·Filed 1990·Granted Dec 17, 1991·11 cites·21 claims
- 2547US7822088B2Nitride semiconductor light emitting device and method for manufacturing the sameOPNEXT JAPAN INC·Filed 2008·Granted Oct 26, 2010·0 cites·13 claims
- 2645US9059328B2Nitride semiconductor element and method of manufacturing the sameHITACHI METALS LTD·Filed 2013·Granted Jun 16, 2015·0 cites·15 claims
- 2745US5666455AWaveguide deviceHITACHI LTD·Filed 1996·Granted Sep 9, 1997·9 cites·3 claims
- 2843US10840671B2Semiconductor laser deviceUSHIO ELECTRIC INC·Filed 2018·Granted Nov 17, 2020·0 cites·11 claims
- 2942US11114817B2Semiconductor laser deviceUSHIO ELECTRIC INC·Filed 2018·Granted Sep 7, 2021·0 cites·3 claims
- 3040US2016013327A1Nitride semiconductor diodeHITACHI LTD·Filed 2013·Application pending·0 cites
- 3137US8598594B2Semiconductor device and its fabrication methodMOCHIZUKI KAZUHIRO·Filed 2012·Granted Dec 3, 2013·0 cites·16 claims
- 3235US2002071462A1Semiconductor laser deviceFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →