Inventor
WATATANI CHIKARA
JP12 patents
⚠️ This page may combine multiple inventors who share the name “WATATANI CHIKARA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI ELECTRIC CORP
11 patentsUS6803597B2Oct 12, 2004
Semiconductor light-emitting device using graded multi quantum barrier
MITSUBISHI ELECTRIC CORP15 citations82
US7720123B2May 18, 2010
Buried type semiconductor laser
MITSUBISHI ELECTRIC CORP7 citations72
US12308607B2May 20, 2025
Semiconductor laser element, method for manufacturing same, and semiconductor laser device
MITSUBISHI ELECTRIC CORP1 citations62
US7298769B2Nov 20, 2007
Semiconductor laser
MITSUBISHI ELECTRIC CORP2 citations61
US7876799B2Jan 25, 2011
Integrated semiconductor optical device
MITSUBISHI ELECTRIC CORP5 citations59
US7816160B2Oct 19, 2010
Manufacturing method for semiconductor device
MITSUBISHI ELECTRIC CORP0 citations48
US7550304B2Jun 23, 2009
Method for manufacturing semiconductor laser element
MITSUBISHI ELECTRIC CORP0 citations48
US7544535B2Jun 9, 2009
Method for manufacturing semiconductor laser element
MITSUBISHI ELECTRIC CORP0 citations48
US7855096B2Dec 21, 2010
Method for manufacturing semiconductor device
MITSUBISHI ELECTRIC CORP0 citations46
US9171760B2Oct 27, 2015
Method of manufacturing semiconductor device
MITSUBISHI ELECTRIC CORP0 citations39
US7656921B2Feb 2, 2010
Semiconductor laser device and method for manufacturing the same semiconductor laser device
MITSUBISHI ELECTRIC CORP0 citations39