Inventor
HAYAKAWA TSUTOMU
JP16 patents
⚠️ This page may combine multiple inventors who share the name “HAYAKAWA TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ELPIDA MEMORY INC
9 patentsUS7671360B2Mar 2, 2010
Semiconductor device and method of producing the same
ELPIDA MEMORY INC13 citations84
US7532507B2May 12, 2009
Phase change memory device and method for manufacturing phase change memory device
ELPIDA MEMORY INC14 citations83
US7368802B2May 6, 2008
Phase-change memory device and method of manufacturing same
ELPIDA MEMORY INC13 citations83
US6723608B2Apr 20, 2004
Method for manufacturing a semiconductor device having a layered gate electrode
ELPIDA MEMORY INC8 citations73
US7755075B2Jul 13, 2010
Phase-change memory device with minimized reduction in thermal efficiency and method of manufacturing the same
ELPIDA MEMORY INC2 citations62
US7498601B2Mar 3, 2009
Phase-change memory device and method of manufacturing same
ELPIDA MEMORY INC4 citations62
US6861319B2Mar 1, 2005
Gate electrode and method of fabricating the same
ELPIDA MEMORY INC2 citations61
US7919767B2Apr 5, 2011
Semiconductor memory device and fabrication method thereof
ELPIDA MEMORY INC1 citations51
US7723717B2May 25, 2010
Semiconductor memory device and fabrication method thereof
ELPIDA MEMORY INC0 citations51
NEC CORP
3 patentsUS5902717AMay 11, 1999
Method of fabricating semiconductor device using half-tone phase shift mask
NEC CORP9 citations73
US6278151B1Aug 21, 2001
Semiconductor device having wiring detour around step
NEC CORP2 citations62
US5789789AAug 4, 1998
Semiconductor device and manufacturing method for improved voltage resistance between an N-well and N-type diffusion layer
NEC CORP2 citations62