Inventor · disambiguated record
Takeo Yamashita
Also filed as: YAMASHITA TAKEO
43 granted patents·3 pending applications·686 citations·filing 1981–2021
98Inventor score
Top patents by PatentIndex Score
46 records- 0195US7154687B2Overshoot current phase/amplitude control for hard disk drive write currentHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Dec 26, 2006·22 cites·6 claims
- 0293US5147732ALongitudinal magnetic recording media and magnetic memory unitsHITACHI LTD·Filed 1989·Granted Sep 15, 1992·96 cites·34 claims
- 0391US6051851ASemiconductor devices utilizing silicide reactionCANON KK·Filed 1997·Granted Apr 18, 2000·122 cites·69 claims
- 0489US6870697B2Overshoot current phase/amplitude control for hard disk drive write currentHITACHI LTD·Filed 2003·Granted Mar 22, 2005·23 cites·21 claims
- 0588US4748089AMultilayered ferromagnetic amorphous alloy film and magnetic head employing the sameHITACHI LTD·Filed 1984·Granted May 31, 1988·30 cites·17 claims
- 0688US4559572AMagnetic head and method of fabricating sameHITACHI LTD·Filed 1984·Granted Dec 17, 1985·29 cites·6 claims
- 0786US6146135AOxide film forming methodOHMI TADAHIRO·Filed 1996·Granted Nov 14, 2000·54 cites·9 claims
- 0886US4610935AMagnetic film structureHITACHI LTD·Filed 1984·Granted Sep 9, 1986·41 cites·24 claims
- 0985US9780773B2Load drive control deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Oct 3, 2017·7 cites·14 claims
- 1079US6949478B2Oxide film forming methodOHMI TADAHIRO·Filed 2002·Granted Sep 27, 2005·13 cites·18 claims
- 1177US4656547AComposite type magnetic head for recording and reproducing high frequency signalsHITACHI LTD·Filed 1984·Granted Apr 7, 1987·19 cites·13 claims
- 1275US5463518AMagnetic head and magnetic recording and reproducing apparatus using a superconducting quantum interference deviceHITACHI LTD·Filed 1991·Granted Oct 31, 1995·24 cites·30 claims
- 1373US4774616AMagnetic head having an integrated recording and playback head and an erasure headHITACHI LTD·Filed 1984·Granted Sep 27, 1988·17 cites·4 claims
- 1472US11726794B2Preventing supply of power to a microcomputer of an electronic control device until capacitors are dischargedHITACHI ASTEMO LTD·Filed 2020·Granted Aug 15, 2023·1 cites·5 claims
- 1572US4439794AMagnetic headHITACHI LTD·Filed 1981·Granted Mar 27, 1984·16 cites·11 claims
- 1669US4731683AMagnetic recording and reproducing system with composite magnetic headHITACHI LTD·Filed 1985·Granted Mar 15, 1988·16 cites·4 claims
- 1767US4803338AMagnetic head having improved track width narrowing groovesHITACHI LTD·Filed 1987·Granted Feb 7, 1989·14 cites·19 claims
- 1866US8443840B2Excessive pressure release valve and release valve unit having the release valveNEMOTO MASASHI·Filed 2008·Granted May 21, 2013·3 cites·12 claims
- 1966US4851942AFloating magnetic head having a magnetic core buried in a channel on an air bearing railHITACHI LTD·Filed 1987·Granted Jul 25, 1989·15 cites·6 claims
- 2064US5818081ASemiconductor deviceOHMI TADAHIRO·Filed 1994·Granted Oct 6, 1998·22 cites·1 claims
- 2162US11542885B2Load drive circuit and load drive systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Jan 3, 2023·0 cites·14 claims
- 2262US8421512B2Duty compensation circuitMURATA TOMOO·Filed 2011·Granted Apr 16, 2013·3 cites·6 claims
- 2361US4769729AMagnetic head having ferromagnetic amorphous alloy multi-layered filmHITACHI LTD·Filed 1986·Granted Sep 6, 1988·11 cites·5 claims
- 2459US12430284B2Arithmetic operation device, testing methodHITACHI ASTEMO LTD·Filed 2021·Granted Sep 30, 2025·0 cites·8 claims
- 2558US7245019B2Semiconductor device with improved wiring arrangement utilizing a projecting portion and a method of manufacturing the sameHITACHI LTD·Filed 2003·Granted Jul 17, 2007·10 cites·37 claims
- 2658US2005206018A1Oxide film forming methodOHMI TADAHIRO·Filed 2005·Application pending·0 cites
- 2757US11459996B2Electronic control unitHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Oct 4, 2022·0 cites·15 claims
- 2856US4972285AAmorphous magnetic alloy of Co-Nb-Zr system and magnetic head made from the sameHITACHI LTD·Filed 1988·Granted Nov 20, 1990·11 cites·8 claims
- 2956US4766039AMagnetic head made from amorphous magnetic filmHITACHI LTD·Filed 1986·Granted Aug 23, 1988·9 cites·19 claims
- 3054US4847715AMagnetic head having short distance between gaps for recording reproducing and erasingHITACHI LTD·Filed 1986·Granted Jul 11, 1989·9 cites·9 claims
- 3153US12164352B2Electronic control device and method for diagnosing electronic control deviceHITACHI ASTEMO LTD·Filed 2021·Granted Dec 10, 2024·0 cites·15 claims
- 3252US11635472B2Load driving deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Apr 25, 2023·0 cites·13 claims
- 3349US4745507AComposite type magnetic head with non-magnetic member in coil mounting portionHITACHI LTD·Filed 1986·Granted May 17, 1988·7 cites·18 claims
- 3448US12316209B2Method and system for diagnosing abnormality of power device drive in inverter deviceHITACHI ASTEMO LTD·Filed 2021·Granted May 27, 2025·0 cites·4 claims
- 3548US12080112B2Electronic control device and diagnosis method of electronic control deviceHITACHI ASTEMO LTD·Filed 2020·Granted Sep 3, 2024·0 cites·12 claims
- 3648US4571652AMagnetic recording and reproducing apparatusHITACHI LTD·Filed 1982·Granted Feb 18, 1986·6 cites·16 claims
- 3747US5247415AMagnetic head having main and auxiliary magnetic pathsHITACHI LTD·Filed 1992·Granted Sep 21, 1993·6 cites·34 claims
- 3845US12093066B2Electronic control deviceHITACHI ASTEMO LTD·Filed 2019·Granted Sep 17, 2024·0 cites·14 claims
- 3943US12341420B2Electronic control device for power conversion, and power supply ICHITACHI ASTEMO LTD·Filed 2020·Granted Jun 24, 2025·0 cites·14 claims
- 4042US5822497AData sorting circuitTADASHI SHIBATA AND TADAHIRO O·Filed 1994·Granted Oct 13, 1998·9 cites·9 claims
- 4140US5973535ASemiconductor circuit using feedback to latch multilevel dataOHMI TADAHIRO·Filed 1994·Granted Oct 26, 1999·6 cites·12 claims
- 4240US5159505ARotating drum having a center of gravity in registry with an axis of rotationHITACHI LTD·Filed 1990·Granted Oct 27, 1992·4 cites·9 claims
- 4339US5784018ASemiconductor circuitOHMI TADAHIRO·Filed 1995·Granted Jul 21, 1998·6 cites·8 claims
- 4437US4939045AMagnetic recording mediumHITACHI LTD·Filed 1988·Granted Jul 3, 1990·5 cites·22 claims
- 4533US2010110751A1Semiconductor storage deviceHITACHI LTD·Filed 2009·Application pending·0 cites
- 4632US2010246078A1Semiconductor integrated circuit deviceHITACHI LTD·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →