Inventor
KATOH RIICHI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “KATOH RIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
11 patentsUS6060743AMay 9, 2000
Semiconductor memory device having multilayer group IV nanocrystal quantum dot floating gate and method of manufacturing the same
TOSHIBA KK267 citations99
US5710436AJan 20, 1998
Quantum effect device
TOSHIBA KK145 citations98
US5177583AJan 5, 1993
Heterojunction bipolar transistor
TOSHIBA KK144 citations97
US6333516B1Dec 25, 2001
Quantum effect device
TOSHIBA KK75 citations94
US6778042B2Aug 17, 2004
High-frequency device
TOSHIBA KK35 citations92
US5041882AAug 20, 1991
Heterojunction bipolar transistor
TOSHIBA KK24 citations92
US5010382AApr 23, 1991
Heterojunction bipolar transistor having double hetero structure
TOSHIBA KK32 citations92
US4933732AJun 12, 1990
Heterojunction bipolar transistor
TOSHIBA KK24 citations91
US5336909AAug 9, 1994
Bipolar transistor with an improved collector structure
TOSHIBA KK21 citations90
US6937117B2Aug 30, 2005
High-frequency device
TOSHIBA KK12 citations84
US5844279ADec 1, 1998
Single-electron semiconductor device
TOSHIBA KK16 citations73