Inventor
WAKAI YOHEI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “WAKAI YOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NICHIA CORP
11 patentsUS7781790B2Aug 24, 2010
Method for manufacturing substrate for semiconductor light emitting element and semiconductor light emitting element using the same
NICHIA CORP29 citations92
US8883529B2Nov 11, 2014
Method for manufacturing semiconductor light emitting device
NICHIA CORP5 citations84
US8847262B2Sep 30, 2014
Sapphire substrate having triangular projections with bottom sides formed of outwardly curved lines
NICHIA CORP6 citations83
US8686457B2Apr 1, 2014
Method for manufacturing substrate for semiconductor light emitting element and semiconductor light emitting element using the same
NICHIA CORP5 citations83
US9525103B2Dec 20, 2016
Sapphire substrate having elongated projection and semiconductor light emitting device utilizing the same
NICHIA CORP2 citations62
US9159868B2Oct 13, 2015
Method for manufacturing semiconductor light emitting device
NICHIA CORP0 citations52
US10381516B2Aug 13, 2019
Semiconductor light emitting device having a recess with irregularities
NICHIA CORP0 citations51
US9070814B2Jun 30, 2015
LED sapphire substrate with groups of three projections on the surface
NICHIA CORP0 citations51
US9054271B2Jun 9, 2015
Method for manufacturing substrate for semiconductor light emitting element and semiconductor light emitting element using the same
NICHIA CORP0 citations51
US8847263B2Sep 30, 2014
Sapphire substrate having triangular projections with outer perimeter formed of continuous curve
NICHIA CORP0 citations51
US9559253B2Jan 31, 2017
Method of manufacturing nitride semiconductor element
NICHIA CORP0 citations45