Inventor
UMEZAKI JUNICHI
JP10 patents
Patents
10 patentsUS6040588AMar 21, 2000
Semiconductor light-emitting device
TOYODA GOSEI KK112 citations99
US5862167AJan 19, 1999
Light-emitting semiconductor device using gallium nitride compound
TOYODA GOSEI KK177 citations99
US6420733B2Jul 16, 2002
Semiconductor light-emitting device and manufacturing method thereof
TOYODA GOSEI KK80 citations98
US6541293B2Apr 1, 2003
Semiconductor light-emitting device and manufacturing method thereof
TOYODA GOSEI KK63 citations96
US6326236B1Dec 4, 2001
Semiconductor light-emitting device and manufacturing method thereof
TOYODA GOSEI KK78 citations96
US6008539ADec 28, 1999
Electrodes for p-type group III nitride compound semiconductors
TOYODA GOSEI KK76 citations96
US5753939AMay 19, 1998
Light-emitting semiconductor device using a Group III nitride compound and having a contact layer upon which an electrode is formed
TOYODA GOSEI KK80 citations96
US5587593ADec 24, 1996
Light-emitting semiconductor device using group III nitrogen compound
TOYODA GOSEI KK55 citations96
US6821800B2Nov 23, 2004
Semiconductor light-emitting device and manufacturing method thereof
TOYODA GOSEI KK29 citations92
US6121127ASep 19, 2000
Methods and devices related to electrodes for p-type group III nitride compound semiconductors
TOYODA GOSEI KK38 citations92