Inventor · disambiguated record
Katsumi Nagano
Also filed as: NAGANO KATSUMI
87 granted patents·1,612 citations·filing 1978–2011
99Inventor score
Files withTOKYO SHIBAURA ELECTRIC CO39MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23TOSHIBA KK10KURATOMI TADASHI3NTN TOYO BEARING CO LTD3
Top patents by PatentIndex Score
87 records- 0196USD406135SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Feb 23, 1999·63 cites·1 claims
- 0295USD407722SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Apr 6, 1999·59 cites·1 claims
- 0395USD407719SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Apr 6, 1999·62 cites·1 claims
- 0494USD408032SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Apr 13, 1999·56 cites·1 claims
- 0594US4408190AResistorless digital-to-analog converter using cascaded current mirror circuitsTOKYO SHIBAURA ELECTRIC CO·Filed 1981·Granted Oct 4, 1983·56 cites·8 claims
- 0693US4819241ALaser diode driving circuitTOSHIBA KK·Filed 1986·Granted Apr 4, 1989·54 cites·62 claims
- 0791USD427983SMobile phoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jul 11, 2000·40 cites·1 claims
- 0891USD402805SPager caseMATSUSHITA ELECTRICAL IND CO LTD·Filed 1997·Granted Dec 22, 1998·44 cites·1 claims
- 0991USD402982SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Dec 22, 1998·43 cites·1 claims
- 1090USD408399SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Apr 20, 1999·39 cites·1 claims
- 1190US4907214AEccentricity correction apparatus for an optical disk deviceTOSHIBA KK·Filed 1986·Granted Mar 6, 1990·35 cites·12 claims
- 1290US4191856AAnalog multiplexerTOKYO SHIBAURA ELECTRIC CO·Filed 1978·Granted Mar 4, 1980·28 cites·6 claims
- 1388US6903056B2Fluid bearing unit and lubricating oil composition for bearingNTN TOYO BEARING CO LTD·Filed 2002·Granted Jun 7, 2005·31 cites·15 claims
- 1488US4507573ACurrent source circuit for producing a small value output current proportional to an input currentTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Mar 26, 1985·31 cites·4 claims
- 1587US8132965B2Hydrodynamic type oil-impregnated sintered bearingMORI NATSUHIKO·Filed 2010·Granted Mar 13, 2012·5 cites·6 claims
- 1686USD341531SElectric screwdriverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Nov 23, 1993·29 cites·1 claims
- 1786US4591739AImpedance conversion circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted May 27, 1986·29 cites·15 claims
- 1885US5631211ALubricating oil composition for use with sintered porous bearingsSANKYO SEIKI SEISAKUSHO KK·Filed 1994·Granted May 20, 1997·41 cites·18 claims
- 1985US4338527AVoltage-current conversion circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1980·Granted Jul 6, 1982·38 cites·10 claims
- 2083USD436939SMobile phoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jan 30, 2001·28 cites·1 claims
- 2183USD407720SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Apr 6, 1999·26 cites·1 claims
- 2282US4418290AVoltage comparatorTOKYO SHIBAURA ELECTRIC CO·Filed 1981·Granted Nov 29, 1983·26 cites·17 claims
- 2381US4268789ALimiter circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted May 19, 1981·19 cites·10 claims
- 2480USD392639SPagerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Mar 24, 1998·22 cites·1 claims
- 2578USD423504SPagerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Apr 25, 2000·21 cites·1 claims
- 2678US4412186ACurrent mirror circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1981·Granted Oct 25, 1983·29 cites·2 claims
- 2777US8250490B2Display image control apparatusFUJIWARA MASATO·Filed 2007·Granted Aug 21, 2012·9 cites·13 claims
- 2876USD375743SPagerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Nov 19, 1996·21 cites·1 claims
- 2976US4633358AH-switch circuit with an overcurrent protection circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1985·Granted Dec 30, 1986·23 cites·8 claims
- 3076US4506208AReference voltage producing circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Mar 19, 1985·26 cites·6 claims
- 3175US8153569B2Lubricant base oilKURATOMI TADASHI·Filed 2007·Granted Apr 10, 2012·4 cites·20 claims
- 3275USD407721SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Apr 6, 1999·19 cites·1 claims
- 3375US5709895AProcess for producing flavor-containing capsuleTAKASAGO INTERNATIONAL CORP US·Filed 1995·Granted Jan 20, 1998·37 cites·5 claims
- 3475US4819219ATrack jump control system for optical disk apparatusTOSHIBA KK·Filed 1987·Granted Apr 4, 1989·19 cites·13 claims
- 3575US4475077ACurrent control circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Oct 2, 1984·24 cites·10 claims
- 3674USD409190SWireless telephoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted May 4, 1999·18 cites·1 claims
- 3774US4806873ALaser diode driving circuitTOSHIBA KK·Filed 1988·Granted Feb 21, 1989·20 cites·27 claims
- 3873US4223276AVoltage follower circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Sep 16, 1980·13 cites·6 claims
- 3972US6673750B2Lubricating compositionNTN TOYO BEARING CO LTD·Filed 2002·Granted Jan 6, 2004·12 cites·17 claims
- 4071US8889608B2Lubricating oil compositionKURATOMI TADASHI·Filed 2011·Granted Nov 18, 2014·1 cites·8 claims
- 4170US4574205ATemperature detecting transistor circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Mar 4, 1986·26 cites·6 claims
- 4268USD436090SMobile phoneMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jan 9, 2001·15 cites·1 claims
- 4367US5067042AWiring board for flat package type integrated circuit deviceTOSHIBA KK·Filed 1989·Granted Nov 19, 1991·24 cites·4 claims
- 4466US4442400AVoltage-to-current converting circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Apr 10, 1984·12 cites·4 claims
- 4566US4308496AReference current source circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1980·Granted Dec 29, 1981·18 cites·5 claims
- 4664US8889607B2Lubricating oil compositionKURATOMI TADASHI·Filed 2011·Granted Nov 18, 2014·1 cites·11 claims
- 4764US4652764ACurrent source circuit with a photo couplerTOKYO SHIBAURA ELECTRIC CO·Filed 1984·Granted Mar 24, 1987·12 cites·3 claims
- 4864US4333141AFull wave rectifierTOKYO SHIBAURA ELECTRIC CO·Filed 1980·Granted Jun 1, 1982·16 cites·3 claims
- 4961US5627147ALubricating fluid composition for dynamic pressure bearingSANKYO SEIKI SEISAKUSHO KK·Filed 1996·Granted May 6, 1997·18 cites·13 claims
- 5061US5042021AEccentricity correction apparatus for an optical disc deviceTOSHIBA KK·Filed 1990·Granted Aug 20, 1991·11 cites·16 claims
Showing the top 50 of 87 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →