Inventor · disambiguated record
Toshihiko Matsuda
Also filed as: MATSUDA TOSHIHIKO
44 granted patents·10 pending applications·1,418 citations·filing 1980–2025
98Inventor score
Files withHITACHI LTD19MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14PANASONIC IP MAN CO LTD9FUJITSU LTD3PANASONIC HOLDINGS CORP2
Top patents by PatentIndex Score
54 records- 0194US4490621AMethod and apparatus for generating electric power by wavesMURORAN INST TECH·Filed 1983·Granted Dec 25, 1984·124 cites·7 claims
- 0292US5559932APrinter and computer system with detachable built-in printerHITACHI LTD·Filed 1995·Granted Sep 24, 1996·252 cites·10 claims
- 0390US4772996ALoad current detecting device for pulse width modulation inverterHITACHI LTD·Filed 1987·Granted Sep 20, 1988·82 cites·16 claims
- 0489US7209355B2Cooling device and an electronic apparatus including the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Apr 24, 2007·58 cites·10 claims
- 0589US6043945ARecording/reproducing device and method of replacing defective sector on mediaFUJITSU LTD·Filed 1997·Granted Mar 28, 2000·67 cites·14 claims
- 0689US5228100AMethod and system for producing from document image a form display with blank fields and a program to input data to the blank fieldsHITACHI LTD·Filed 1990·Granted Jul 13, 1993·195 cites·30 claims
- 0787USD520023SPumpMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted May 2, 2006·41 cites·1 claims
- 0885USD482370SPump for circulating coolant in electronic devicesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Nov 18, 2003·33 cites·1 claims
- 0985US2025361963A1Tube couplingPANASONIC IP MAN CO LTD·Filed 2025·Application pending·0 cites
- 1084USD484146SPumpMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Dec 23, 2003·30 cites·1 claims
- 1183US5191622AHand-written character recognition apparatus with a personal dictionary preparation functionHITACHI LTD·Filed 1988·Granted Mar 2, 1993·71 cites·6 claims
- 1282USD534548SPumpMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Jan 2, 2007·32 cites·1 claims
- 1381US2025230961A1Reservoir tank, cooling device, and projectorPANASONIC IP MAN CO LTD·Filed 2025·Application pending·0 cites
- 1479US8213146B2Semiconductor power conversion apparatusKATOH SHUJI·Filed 2010·Granted Jul 3, 2012·5 cites·6 claims
- 1579US7255154B2Cooling deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Aug 14, 2007·11 cites·7 claims
- 1678US2025334301A1Cooling apparatusPANASONIC HOLDINGS CORP·Filed 2025·Application pending·0 cites
- 1777US6078454AHead assembly having a table for storing a head offset and bias currentFUJITSU LTD·Filed 1995·Granted Jun 20, 2000·31 cites·12 claims
- 1876USD492325SPump for circulating coolant in electronic devicesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jun 29, 2004·21 cites·1 claims
- 1976US4584528ASpeed detecting method and apparatusHITACHI LTD·Filed 1982·Granted Apr 22, 1986·24 cites·10 claims
- 2075US2025257830A1Tube couplingPANASONIC IP MAN CO LTD·Filed 2025·Application pending·0 cites
- 2174US4965504AControl apparatus for inverter for driving AC motorHITACHI LTD·Filed 1989·Granted Oct 23, 1990·30 cites·22 claims
- 2272US12410877B2Tube couplingPANASONIC IP MAN CO LTD·Filed 2022·Granted Sep 9, 2025·0 cites·8 claims
- 2371US4839834ASpeed detecting apparatusHITACHI LTD·Filed 1987·Granted Jun 13, 1989·29 cites·11 claims
- 2470US12292218B2Reservoir tank, cooling device, and projectorPANASONIC IP MAN CO LTD·Filed 2021·Granted May 6, 2025·0 cites·10 claims
- 2570US12270498B2Tube couplingPANASONIC IP MAN CO LTD·Filed 2022·Granted Apr 8, 2025·0 cites·4 claims
- 2668USD482698SPump for circulating coolant in electronic devicesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Nov 25, 2003·16 cites·1 claims
- 2763US4507693AControl apparatus for rotation type storage deviceHITACHI LTD·Filed 1982·Granted Mar 26, 1985·33 cites·13 claims
- 2863US4468724AMethod and apparatus for controlling load currentHITACHI LTD·Filed 1982·Granted Aug 28, 1984·16 cites·18 claims
- 2962US5857034ASystem for inputting character dataHITACHI LTD·Filed 1992·Granted Jan 5, 1999·38 cites·7 claims
- 3061USD483041SPump for circulating coolant in electronic devicesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Dec 2, 2003·12 cites·1 claims
- 3161US4983875AActuatorHITACHI LTD·Filed 1989·Granted Jan 8, 1991·28 cites·27 claims
- 3259US5638225AMagnetic disc apparatusFUJITSU LTD·Filed 1993·Granted Jun 10, 1997·14 cites·17 claims
- 3359US2025146609A1Tube jointPANASONIC HOLDINGS CORP·Filed 2025·Application pending·0 cites
- 3455US6435036B1Vortex flow meterMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Aug 20, 2002·10 cites·22 claims
- 3555US2023371198A1Cooling devicePANASONIC IP MAN CO LTD·Filed 2023·Application pending·0 cites
- 3653US4995126ACushion with heating padMARUMANJI SANGYO CO LTD·Filed 1990·Granted Feb 26, 1991·24 cites·2 claims
- 3753US4814678ASpeed control apparatus for motorHITACHI LTD·Filed 1987·Granted Mar 21, 1989·13 cites·5 claims
- 3852US11640104B2Light source device having a sealing member, method of manufacturing the light source device, and projector including the light source devicePANASONIC IP MAN CO LTD·Filed 2021·Granted May 2, 2023·0 cites·9 claims
- 3952US5592565AHand-written character recognition apparatus with a personal dictionary preparation functionHITACHI LTD·Filed 1994·Granted Jan 7, 1997·22 cites·1 claims
- 4051US7648790B2Electrolyte for fuel cell and fuel cell employing the sameSAMSUNG SDI CO LTD·Filed 2005·Granted Jan 19, 2010·0 cites·9 claims
- 4150US7490568B2Bearded NeedleORGAN NEEDLE·Filed 2007·Granted Feb 17, 2009·2 cites·11 claims
- 4250US2022196336A1Heat exchangerPANASONIC IP MAN CO LTD·Filed 2021·Application pending·0 cites
- 4347US2005147861A1Proton conducting electrolyte and fuel cell using the sameSAMSUNG SDI CO LTD·Filed 2004·Application pending·0 cites
- 4445US5298689ACoordinate input device using Matteucci effectHITACHI LTD·Filed 1991·Granted Mar 29, 1994·10 cites·13 claims
- 4543US2005155755A1Liquid cooling device and electronic equipment provided with the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Application pending·0 cites
- 4642US4872000ACoordinate input apparatusHITACHI LTD·Filed 1987·Granted Oct 3, 1989·11 cites·7 claims
- 4741US4337509AMethod and apparatus for controlling firing phases of thyristorsHITACHI LTD·Filed 1980·Granted Jun 29, 1982·7 cites·15 claims
- 4839USD490781SRadiatorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jun 1, 2004·3 cites·1 claims
- 4939USD486455SRadiatorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Feb 10, 2004·3 cites·1 claims
- 5039USD485535SRadiatorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jan 20, 2004·3 cites·1 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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