Inventor
KOZAWA TAKAHIRO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “KOZAWA TAKAHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYODA GOSEI KK
9 patentsUS6891203B2May 10, 2005
Light emitting device
TOYODA GOSEI KK108 citations98
US5369289ANov 29, 1994
Gallium nitride-based compound semiconductor light-emitting device and method for making the same
TOYODA GOSEI KK279 citations98
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
US7247884B2Jul 24, 2007
Group III nitride compound semiconductor light-emitting element
TOYODA GOSEI KK35 citations92
US6649943B2Nov 18, 2003
Group III nitride compound semiconductor light-emitting element
TOYODA GOSEI KK33 citations92
US6121127ASep 19, 2000
Methods and devices related to electrodes for p-type group III nitride compound semiconductors
TOYODA GOSEI KK38 citations92
US6864502B2Mar 8, 2005
III group nitride system compound semiconductor light emitting element
TOYODA GOSEI KK13 citations84
US7897987B2Mar 1, 2011
Light-emitting device including light-emitting diode and stacked light-emitting phosphor layers
TOYODA GOSEI KK7 citations82