Inventor
TSUCHIYA TOMONOBU
JP30 patents
⚠️ This page may combine multiple inventors who share the name “TSUCHIYA TOMONOBU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
13 patentsUS5119393AJun 2, 1992
Semiconductor laser device capable of controlling wavelength shift
HITACHI LTD81 citations96
US6700910B1Mar 2, 2004
Wavelength tunable laser and optical device
HITACHI LTD54 citations94
US6821801B1Nov 23, 2004
Manufacturing method of semiconductor laser diode
HITACHI LTD20 citations92
US5177758AJan 5, 1993
Semiconductor laser device with plural active layers and changing optical properties
HITACHI LTD54 citations92
US5132981AJul 21, 1992
Semiconductor optical device
HITACHI LTD31 citations92
US5844931ADec 1, 1998
Semiconductor laser devices
HITACHI LTD36 citations89
US6853015B2Feb 8, 2005
Optical semiconductor device including InGaAlAs doped with Zn
HITACHI LTD7 citations74
US5666455ASep 9, 1997
Waveguide device
HITACHI LTD9 citations74
US5572616ANov 5, 1996
Waveguide device
HITACHI LTD12 citations74
US5073892ADec 17, 1991
Semiconductor laser device
HITACHI LTD11 citations74
US6606443B2Aug 12, 2003
Optical transmission device
HITACHI LTD11 citations72
US6459840B1Oct 1, 2002
Optical transmission device
HITACHI LTD12 citations72
US8896027B2Nov 25, 2014
Nitride semiconductor diode
HITACHI LTD3 citations62
OPNEXT JAPAN INC
8 patentsUS6989550B2Jan 24, 2006
Distributed feedback semiconductor laser equipment employing a grating
OPNEXT JAPAN INC15 citations83
US7340142B1Mar 4, 2008
Integrated optoelectronic device and method of fabricating the same
OPNEXT JAPAN INC8 citations73
US7038233B2May 2, 2006
Semiconductor optical devices and optical modules
OPNEXT JAPAN INC3 citations63
US7596160B2Sep 29, 2009
Nitride semiconductor lasers and its manufacturing method
OPNEXT JAPAN INC2 citations62
US7583714B2Sep 1, 2009
Vertical cavity surface emitting semiconductor laser device
OPNEXT JAPAN INC6 citations62
US7514349B2Apr 7, 2009
Semiconductor optical device and manufacturing method thereof
OPNEXT JAPAN INC5 citations62
US7329894B2Feb 12, 2008
Semiconductor laser device and semiconductor optical modulator
OPNEXT JAPAN INC6 citations62
US7822088B2Oct 26, 2010
Nitride semiconductor light emitting device and method for manufacturing the same
OPNEXT JAPAN INC0 citations41
HITACHI HIGH TECH CORP
2 patentsUS11062892B2Jul 13, 2021
Charged particle detector including a light-emitting section having lamination structure, charged particle beam device, and mass spectrometer
HITACHI HIGH TECH CORP3 citations73
US10984979B2Apr 20, 2021
Charged particle detector and charged particle beam apparatus
HITACHI HIGH TECH CORP0 citations62