Inventor
NAKAO HIRONOBU
JP18 patents
⚠️ This page may combine multiple inventors who share the name “NAKAO HIRONOBU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROHM CO LTD
14 patentsUS5654568AAug 5, 1997
Semiconductor device including nonvolatile memories
ROHM CO LTD121 citations97
US5402374AMar 28, 1995
Non-volatile semiconductor memory device and memory circuit using the same
ROHM CO LTD79 citations96
US5345415ASep 6, 1994
Nonvolatile semiconductor memory utilizing a ferroelectric film
ROHM CO LTD46 citations96
US5303182AApr 12, 1994
Nonvolatile semiconductor memory utilizing a ferroelectric film
ROHM CO LTD95 citations96
US5589700ADec 31, 1996
Semiconductor nonvolatile memory
ROHM CO LTD19 citations92
US5332915AJul 26, 1994
Semiconductor memory apparatus
ROHM CO LTD27 citations92
US5319230AJun 7, 1994
Non-volatile storage device
ROHM CO LTD23 citations92
US5300799AApr 5, 1994
Nonvolatile semiconductor storage device with ferroelectric capacitors
ROHM CO LTD44 citations92
US5187636AFeb 16, 1993
Dielectric device
ROHM CO LTD27 citations92
US5874761AFeb 23, 1999
Semiconductor memory device with three-dimensional cluster distribution
ROHM CO LTD11 citations73
US5366913ANov 22, 1994
Method of manufacturing semiconductor device employing oxide sidewalls
ROHM CO LTD11 citations73
US5291048AMar 1, 1994
Non-volatile storage device with impurities in nitride toward source side
ROHM CO LTD15 citations73
US5331190AJul 19, 1994
Semiconductor device including nonvolatile memories
ROHM CO LTD3 citations63
US5293062AMar 8, 1994
FET nonvolatile memory with composite gate insulating layer
ROHM CO LTD4 citations62