Inventor
KATTO HISAO
JP19 patents
Patents
19 patentsUS4652897AMar 24, 1987
Semiconductor memory device
HITACHI LTD106 citations96
US4317055AFeb 23, 1982
High-voltage circuit for insulated gate field-effect transistor
HITACHI LTD137 citations95
US5610089AMar 11, 1997
Method of fabrication of semiconductor integrated circuit device
HITACHI LTD40 citations92
US5416347AMay 16, 1995
Semiconductor memory device with additional conductive line to prevent line breakage
HITACHI LTD23 citations92
US5276346AJan 4, 1994
Semiconductor integrated circuit device having protective/output elements and internal circuits
HITACHI LTD29 citations92
US4717684AJan 5, 1988
Semiconductor integrated circuit device
HITACHI LTD41 citations92
US5534723AJul 9, 1996
Semiconductor integrated circuit device having output and internal circuit MISFETS
HITACHI LTD18 citations82
US4295265AOct 20, 1981
Method for producing a nonvolatile semiconductor memory
HITACHI LTD23 citations82
US4818716AApr 4, 1989
Semiconductor device and manufacturing method thereof
HITACHI LTD19 citations81
US4731642AMar 15, 1988
Semiconductor memory device with means to prevent word line breakage
HITACHI LTD21 citations81
US4377819AMar 22, 1983
Semiconductor device
HITACHI LTD23 citations81
US5436484AJul 25, 1995
Semiconductor integrated circuit device having input protective elements and internal circuits
HITACHI LTD7 citations74
US5436483AJul 25, 1995
Semiconductor integrated circuit device having a first MISFET of an output buffer circuit and a second MISFET of an internal circuit
HITACHI LTD10 citations74
US5286666AFeb 15, 1994
Method of producing semiconductor memory device
HITACHI LTD11 citations74
US5116775AMay 26, 1992
Method of producing semiconductor memory device with buried barrier layer
HITACHI LTD7 citations74
US4830977AMay 16, 1989
Method of making a semiconductor memory device
HITACHI LTD8 citations73
US4121240AOct 17, 1978
Semiconductor device having a discharge-formed insulating film
HITACHI LTD18 citations73
US4904615AFeb 27, 1990
Method of making a read only memory device
HITACHI LTD11 citations72
US5580810ADec 3, 1996
Method of making a semiconductor memory device
HITACHI LTD3 citations62