Inventor · disambiguated record
Hisao Katto
Also filed as: KATTO HISAO
19 granted patents·555 citations·filing 1976–1995
96Inventor score
Files withHITACHI LTD19
Top patents by PatentIndex Score
19 records- 0198US4317055AHigh-voltage circuit for insulated gate field-effect transistorHITACHI LTD·Filed 1979·Granted Feb 23, 1982·137 cites·12 claims
- 0295US4652897ASemiconductor memory deviceHITACHI LTD·Filed 1985·Granted Mar 24, 1987·106 cites·19 claims
- 0381US4717684ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1986·Granted Jan 5, 1988·41 cites·29 claims
- 0476US5276346ASemiconductor integrated circuit device having protective/output elements and internal circuitsHITACHI LTD·Filed 1992·Granted Jan 4, 1994·29 cites·4 claims
- 0575US5610089AMethod of fabrication of semiconductor integrated circuit deviceHITACHI LTD·Filed 1995·Granted Mar 11, 1997·40 cites·19 claims
- 0668US4377819ASemiconductor deviceHITACHI LTD·Filed 1979·Granted Mar 22, 1983·23 cites·8 claims
- 0768US4295265AMethod for producing a nonvolatile semiconductor memoryHITACHI LTD·Filed 1979·Granted Oct 20, 1981·23 cites·11 claims
- 0865US5534723ASemiconductor integrated circuit device having output and internal circuit MISFETSHITACHI LTD·Filed 1995·Granted Jul 9, 1996·18 cites·13 claims
- 0964US4818716ASemiconductor device and manufacturing method thereofHITACHI LTD·Filed 1987·Granted Apr 4, 1989·19 cites·26 claims
- 1063US4731642ASemiconductor memory device with means to prevent word line breakageHITACHI LTD·Filed 1985·Granted Mar 15, 1988·21 cites·10 claims
- 1161US5416347ASemiconductor memory device with additional conductive line to prevent line breakageHITACHI LTD·Filed 1992·Granted May 16, 1995·23 cites·13 claims
- 1260US4121240ASemiconductor device having a discharge-formed insulating filmHITACHI LTD·Filed 1976·Granted Oct 17, 1978·18 cites·4 claims
- 1351US5436483ASemiconductor integrated circuit device having a first MISFET of an output buffer circuit and a second MISFET of an internal circuitHITACHI LTD·Filed 1993·Granted Jul 25, 1995·10 cites·23 claims
- 1450US4904615AMethod of making a read only memory deviceHITACHI LTD·Filed 1989·Granted Feb 27, 1990·11 cites·13 claims
- 1545US5436484ASemiconductor integrated circuit device having input protective elements and internal circuitsHITACHI LTD·Filed 1993·Granted Jul 25, 1995·7 cites·24 claims
- 1643US4830977AMethod of making a semiconductor memory deviceHITACHI LTD·Filed 1988·Granted May 16, 1989·8 cites·5 claims
- 1740US5286666AMethod of producing semiconductor memory deviceHITACHI LTD·Filed 1992·Granted Feb 15, 1994·11 cites·49 claims
- 1836US5116775AMethod of producing semiconductor memory device with buried barrier layerHITACHI LTD·Filed 1989·Granted May 26, 1992·7 cites·32 claims
- 1934US5580810AMethod of making a semiconductor memory deviceHITACHI LTD·Filed 1995·Granted Dec 3, 1996·3 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →