Inventor
KAYANUMA AKIO
JP8 patents
⚠️ This page may combine multiple inventors who share the name “KAYANUMA AKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
6 patentsUS5163178ANov 10, 1992
Semiconductor device having enhanced impurity concentration profile
SONY CORP47 citations90
US4980748ADec 25, 1990
Semiconductor device made with a trenching process
SONY CORP12 citations72
US4584055AApr 22, 1986
Method for manufacturing a semiconductor device
SONY CORP18 citations72
US4024564AMay 17, 1977
Semiconductor device having at least one PN junction and channel stopper surrounder by a protecture conducting layer
SONY CORP17 citations68
US4984053AJan 8, 1991
Bipolar transistor with reduced parasitic capacitance
SONY CORP6 citations60
US4591398AMay 27, 1986
Method for manufacturing a semiconductor device utilizing self-aligned oxide-nitride masking
SONY CORP4 citations60