Inventor
SAKAGUCHI YASUYUKI
JP9 patents
⚠️ This page may combine multiple inventors who share the name “SAKAGUCHI YASUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHOWA DENKO KK
7 patentsUS5656829AAug 12, 1997
Semiconductor light emitting diode
SHOWA DENKO KK113 citations93
US5744829AApr 28, 1998
A1GaInP light emitting diode
SHOWA DENKO KK66 citations92
US6719842B2Apr 13, 2004
Ammonia for use in manufacture of GaN-type compound semiconductor and method for manufacturing GaN-type compound semiconductor
SHOWA DENKO KK5 citations72
US7029940B2Apr 18, 2006
Ammonia for use in manufacture of GaN-type compound semiconductor and method for manufacturing GaN-type compound semiconductor
SHOWA DENKO KK3 citations61
US12517027B2Jan 6, 2026
Method of inspecting lubricating oil composition and method of producing lubricating oil composition
SHOWA DENKO KK0 citations57
US7993453B2Aug 9, 2011
Method for producing silicon carbide single crystal
SHOWA DENKO KK3 citations54
US7371281B2May 13, 2008
Silicon carbide single crystal and method and apparatus for producing the same
SHOWA DENKO KK0 citations39