Inventor · disambiguated record
Sumio Tanaka
Also filed as: TANAKA SUMIO
72 granted patents·1 pending application·2,212 citations·filing 1980–2019
99Inventor score
Files withTOSHIBA KK59TOKYO SHIBAURA ELECTRIC CO5MITSUBISHI MOTORS CORP4GOLD STAR CO2LG ELECTRONICS INC1
Top patents by PatentIndex Score
73 records- 0196US5600592ANonvolatile semiconductor memory device having a word line to which a negative voltage is appliedTOSHIBA KK·Filed 1995·Granted Feb 4, 1997·90 cites·19 claims
- 0296US5438542ANonvolatile semiconductor memory deviceTOSHIBA KK·Filed 1994·Granted Aug 1, 1995·83 cites·23 claims
- 0395US5392253ANonvolatile semiconductor memory device having row decoder supplying a negative potential to word lines during erase modeTOSHIBA KK·Filed 1992·Granted Feb 21, 1995·82 cites·23 claims
- 0495US4943962ANonvolatile semiconductor memory having page mode programming functionTOSHIBA KK·Filed 1988·Granted Jul 24, 1990·95 cites·19 claims
- 0595US4574273ACircuit for changing the voltage level of binary signalsTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Mar 4, 1986·59 cites·3 claims
- 0694US5798964AFRAM, FRAM card, and card system using the sameTOSHIBA CORP·Filed 1995·Granted Aug 25, 1998·120 cites·13 claims
- 0791US6002354AVariable potential generating circuit using current-scaling adding type D/A converter circuitTOSHIBA KK·Filed 1998·Granted Dec 14, 1999·72 cites·17 claims
- 0891US4860260ASemiconductor memory device with testing of redundant memory cellsTOSHIBA KK·Filed 1987·Granted Aug 22, 1989·67 cites·14 claims
- 0991US4636879AVTR systemRICOH KK·Filed 1984·Granted Jan 13, 1987·79 cites·6 claims
- 1090US6097622AFerroelectric memory used for the RFID system, method for driving the same, semiconductor chip and ID cardTOSHIBA KK·Filed 1997·Granted Aug 1, 2000·84 cites·22 claims
- 1190US5892706AFram, fram card, and card system using the sameTOSHIBA KK·Filed 1998·Granted Apr 6, 1999·73 cites·5 claims
- 1289US5388084ANon-volatile semiconductor memory device with high voltage generatorTOSHIBA KK·Filed 1993·Granted Feb 7, 1995·71 cites·17 claims
- 1389US4926070AVoltage level converting circuitTOSHIBA KK·Filed 1988·Granted May 15, 1990·42 cites·6 claims
- 1488US6473330B1Chain type ferroelectric memory with isolation transistors coupled between a sense amplifier and an equalization circuitTOSHIBA KK·Filed 2000·Granted Oct 29, 2002·32 cites·16 claims
- 1584US6166987ANonvolatile semiconductor memory device having row decoderTOSHIBA KK·Filed 1999·Granted Dec 26, 2000·35 cites·5 claims
- 1684US5233566AAddress detector of a redundancy memory cellTOSHIBA KK·Filed 1990·Granted Aug 3, 1993·54 cites·24 claims
- 1784US4884241ANonvolatile semiconductor memory deviceTOSHIBA KK·Filed 1989·Granted Nov 28, 1989·44 cites·6 claims
- 1883US5559737ANonvolatile semiconductor memory capable of simultaneously equalizing bit lines and sense linesTOSHIBA KK·Filed 1994·Granted Sep 24, 1996·51 cites·11 claims
- 1983US5513146ANonvolatile semiconductor memory device having a row decoder supplying a negative potential to word lines during erase modeTOSHIBA KK·Filed 1994·Granted Apr 30, 1996·31 cites·17 claims
- 2083US4970691A2-cell/1-bit type EPROMTOSHIBA KK·Filed 1989·Granted Nov 13, 1990·43 cites·17 claims
- 2182US6046926AFerroelectric memory and screening method thereforTOSHIBA KK·Filed 1998·Granted Apr 4, 2000·54 cites·20 claims
- 2281US6088267ANonvolatile semiconductor memory device having row decoderTOSHIBA KK·Filed 1998·Granted Jul 11, 2000·29 cites·21 claims
- 2381US4788663ANonvolatile semiconductor memory device with a lightly-doped drain structureTOSHIBA KK·Filed 1987·Granted Nov 29, 1988·39 cites·17 claims
- 2479US6061289AVariable potential generating circuit using current-scaling adding type D/A converter circuit in semiconductor memory deviceTOSHIBA KK·Filed 1999·Granted May 9, 2000·37 cites·4 claims
- 2579US4893275AHigh voltage switching circuit in a nonvolatile memoryTOSHIBA KK·Filed 1988·Granted Jan 9, 1990·36 cites·3 claims
- 2678US5943256ANonvolatile ferroelectric memoryTOSHIBA KK·Filed 1998·Granted Aug 24, 1999·42 cites·40 claims
- 2777US6023438ASemiconductor memory device for reading charges stored in capacitor in memory cell and data reading method thereofTOSHIBA KK·Filed 1998·Granted Feb 8, 2000·33 cites·27 claims
- 2877US5812459ANonvolatile semiconductor memory device having row decoder supplying a negative potential to wordlines during erase modeTOSHIBA KK·Filed 1997·Granted Sep 22, 1998·24 cites·21 claims
- 2976US6191971B1Ferroelectric memory deviceTOSHIBA KK·Filed 1999·Granted Feb 20, 2001·36 cites·27 claims
- 3076US5680349ANonvolatile semiconductor memory device having row decoder supplying a negative potential to word lines during erase modeTOSHIBA KK·Filed 1996·Granted Oct 21, 1997·23 cites·14 claims
- 3176US4916665ASemiconductor memory device with P-channel MOS transistor load circuitTOSHIBA KK·Filed 1984·Granted Apr 10, 1990·23 cites·4 claims
- 3275US5229963ASemiconductor nonvolatile memory device for controlling the potentials on bit linesTOSHIBA KK·Filed 1991·Granted Jul 20, 1993·37 cites·11 claims
- 3375US4879689ANonvolatile semiconductor memory deviceTOSHIBA KK·Filed 1987·Granted Nov 7, 1989·34 cites·12 claims
- 3475US4494219ANonvolatile read only memory deviceTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Jan 15, 1985·22 cites·9 claims
- 3573US5461437AVideo tape recorder equipped with liquid crystal display projectorGOLD STAR CO·Filed 1994·Granted Oct 24, 1995·39 cites·4 claims
- 3672US6671200B2Ferroelectric random access memory with isolation transistors coupled between a sense amplifier and an equalization circuitTOSHIBA KK·Filed 2003·Granted Dec 30, 2003·12 cites·15 claims
- 3772US4692902ASemiconductor read only memory device with improved access timeTOSHIBA KK·Filed 1984·Granted Sep 8, 1987·19 cites·11 claims
- 3870US7295456B2Chain ferroelectric random access memory (CFRAM) having an intrinsic transistor connected in parallel with a ferroelectric capacitorTOSHIBA KK·Filed 2006·Granted Nov 13, 2007·4 cites·5 claims
- 3970US7057917B2Ferroelectric memory with an intrinsic access transistor coupled to a capacitorTOSHIBA KK·Filed 2003·Granted Jun 6, 2006·10 cites·6 claims
- 4064US6324100B1Nonvolatile semiconductor memory deviceTOSHIBA KK·Filed 2000·Granted Nov 27, 2001·5 cites·8 claims
- 4164US4956816ANon-volatile semiconductor memory having improved testing circuitryTOSHIBA KK·Filed 1989·Granted Sep 11, 1990·32 cites·3 claims
- 4263US6288961B1Semiconductor memory device for reading charges stored in capacitor in memory cell and data reading method thereofTOSHIBA KK·Filed 1999·Granted Sep 11, 2001·18 cites·4 claims
- 4363US6111777AFerroelectric memoryTOSHIBA KK·Filed 1999·Granted Aug 29, 2000·22 cites·7 claims
- 4463US5875129ANonvolatile semiconductor memory device including potential generating circuitTOSHIBA KK·Filed 1996·Granted Feb 23, 1999·11 cites·18 claims
- 4561US9061683B2Traveling mode switching controller of hybrid electric vehicleMITSUBISHI MOTORS CORP·Filed 2013·Granted Jun 23, 2015·2 cites·2 claims
- 4661US5331597ASemiconductor nonvolatile memory apparatus including threshold voltage shift circuitryTOSHIBA KK·Filed 1991·Granted Jul 19, 1994·21 cites·6 claims
- 4761US4974206ANonvolatile semiconductor memory device having reference potential generating circuitTOSHIBA KK·Filed 1989·Granted Nov 27, 1990·19 cites·10 claims
- 4859US5105385ACell array pattern layout for eeprom deviceTOSHIBA KK·Filed 1991·Granted Apr 14, 1992·19 cites·11 claims
- 4958US6552922B2Chain-type ferroelectric random access memory (FRAM) with rewrite transistors coupled between a sense amplifier and a bit line pairTOSHIBA KK·Filed 2002·Granted Apr 22, 2003·6 cites·3 claims
- 5057US5237534AData sense circuit for a semiconductor nonvolatile memory deviceTOSHIBA KK·Filed 1992·Granted Aug 17, 1993·24 cites·16 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Sumio Tanaka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →