Inventor · disambiguated record
Takamasa Yoshikawa
Also filed as: YOSHIKAWA TAKAMASA
39 granted patents·8 pending applications·1,152 citations·filing 1989–2023
98Inventor score
Files withPIONEER ELECTRONIC CORP20PIONEER CORP12MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5HOYA CORP2FUJITSU LTD1
Top patents by PatentIndex Score
47 records- 0197US6166487AElectron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 2000·Granted Dec 26, 2000·78 cites·14 claims
- 0295US5990605AElectron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Nov 23, 1999·112 cites·11 claims
- 0393US6130503AElectron emission device and display using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Oct 10, 2000·73 cites·24 claims
- 0492US6285123B1Electron emission device with specific island-like regionsPIONEER CORP·Filed 1999·Granted Sep 4, 2001·76 cites·27 claims
- 0591US6488378B1Imaging apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 3, 2002·38 cites·20 claims
- 0691US6184612B1Electron emission device with electron supply layer of hydrogenated amorphous siliconPIONEER ELECTRONIC CORP·Filed 1998·Granted Feb 6, 2001·70 cites·2 claims
- 0790US6787992B2Display device of flat panel structure with emission devices of matrix arrayPIONEER CORP·Filed 2001·Granted Sep 7, 2004·38 cites·35 claims
- 0890US6066922AElectron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted May 23, 2000·62 cites·14 claims
- 0987US6023125AElectron emission device and display using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Feb 8, 2000·49 cites·2 claims
- 1087US5000834AFacing targets sputtering devicePIONEER ELECTRONIC CORP·Filed 1989·Granted Mar 19, 1991·53 cites·3 claims
- 1186US6744063B2Image pickup device including electron-emitting devicesPIONEER CORP·Filed 2001·Granted Jun 1, 2004·27 cites·8 claims
- 1283US6641887B2Optical recording mediumPIONEER CORP·Filed 2001·Granted Nov 4, 2003·17 cites·14 claims
- 1381US6400070B1Electron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Jun 4, 2002·36 cites·12 claims
- 1480US6700132B2Flat panel display device utilizing electron emission devicesPIONEER CORP·Filed 2001·Granted Mar 2, 2004·16 cites·9 claims
- 1579US7348531B2Photoelectric conversion device and image pickup device using electron emission devicesPIONEER CORP·Filed 2005·Granted Mar 25, 2008·6 cites·19 claims
- 1679US6776510B1Light source device, adjusting device therefore and production method therefore, and illuminating device and projection type display device provided with light source deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 17, 2004·17 cites·52 claims
- 1778US6404124B1Electron emission device and display apparatus using the samePIONEER ELECTRONIC CORP·Filed 1999·Granted Jun 11, 2002·31 cites·21 claims
- 1877US6472803B1Electron emission light-emitting device and display apparatus using the samePIONEER CORP·Filed 1999·Granted Oct 29, 2002·29 cites·12 claims
- 1976US6316873B1Electron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Nov 13, 2001·28 cites·20 claims
- 2076US5681633AMagneto optical disc, apparatus for reproducing the same and method of reproducing the samePIONEER ELECTRONIC CORP·Filed 1996·Granted Oct 28, 1997·37 cites·9 claims
- 2175US6259198B1Flat panel display apparatus with an array of electron emitting devicesPIONEER ELECTRONIC CORP·Filed 1998·Granted Jul 10, 2001·29 cites·9 claims
- 2275US5894189ACold electron emission display devicePIONEER ELECTRONIC CORP·Filed 1997·Granted Apr 13, 1999·28 cites·11 claims
- 2374US7125144B2Illumination device and illumination methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Oct 24, 2006·14 cites·11 claims
- 2473US7118227B2Projection display deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Oct 10, 2006·9 cites·21 claims
- 2573US5986390AElectron emission device having peak intensity ratio characteristic of raman spectrum for fold ring of SiO2PIONEER ELECTRONIC CORP·Filed 1998·Granted Nov 16, 1999·25 cites·8 claims
- 2672US6388376B1Electron emission device with electron supply layer having reduced resistancePIONEER CORP·Filed 1999·Granted May 14, 2002·23 cites·8 claims
- 2772US6144155AElectron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Nov 7, 2000·23 cites·4 claims
- 2871US7095040B2Electron-emitting device and method of manufacturing the same and display apparatus using the samePIONEER CORP·Filed 2001·Granted Aug 22, 2006·9 cites·35 claims
- 2970US5382460AOptical recording disk and production process thereforPIONEER ELECTRONIC CORP·Filed 1991·Granted Jan 17, 1995·18 cites·5 claims
- 3069US7010939B2Glass substrate for data recording medium and manufacturing method thereofHOYA CORP·Filed 2003·Granted Mar 14, 2006·12 cites·12 claims
- 3168US7033030B2Projection-type display apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Apr 25, 2006·4 cites·1 claims
- 3268US6147443AElectron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Nov 14, 2000·19 cites·3 claims
- 3364US6278230B1Electron emission device and display device using the samePIONEER ELECTRONIC CORP·Filed 1998·Granted Aug 21, 2001·16 cites·2 claims
- 3461US5087340AMethod of making magneto-optical recording diskPIONEER ELECTRONIC CORP·Filed 1990·Granted Feb 11, 1992·13 cites·2 claims
- 3552US7994698B2Electron emitting device, display apparatus using electron emitting device, and method of manufacturing electron emitting devicePIONEER CORP·Filed 2007·Granted Aug 9, 2011·0 cites·13 claims
- 3651US6125041ACard-type electronic deviceFUJITSU LTD·Filed 1997·Granted Sep 26, 2000·15 cites·10 claims
- 3750US2023418142A1Light source device and projection display apparatusPANASONIC IP MAN CO LTD·Filed 2023·Application pending·0 cites
- 3848US11088006B2Electrostatic chuckSHINKO ELECTRIC IND CO·Filed 2019·Granted Aug 10, 2021·0 cites·4 claims
- 3946US7902760B2Electron emission device, and driving method thereofPIONEER CORP·Filed 2005·Granted Mar 8, 2011·0 cites·16 claims
- 4042US2002076070A1SpeakerPIONEER CORP·Filed 2001·Application pending·0 cites
- 4142US2008211401A1Electron Emission Device And Manufacturing Method Of The SameNAKADA TOMONARI·Filed 2005·Application pending·0 cites
- 4240US2005101230A1Clamping jig for glass substrate, buffer sheet, method for processing glass substrate, and glass substrateHOYA CORP·Filed 2004·Application pending·0 cites
- 4339US2004251841A1Electron emitting device and method of manufacturing the same and display apparatus using the sameFiled 2002·Application pending·0 cites
- 4438US2007241655A1Electron Emitting Device and Manufacturing Method Thereof and Image Pick Up Device or Display Device Using Electron Emitting DeviceSAKEMURA KAZUTO·Filed 2005·Application pending·0 cites
- 4538US2003082999A1Clamping jig for glass substrate, buffer sheet, method for processing glass substrate, and glass substrateNIPPON SHEET GLASS CO LTD·Filed 2002·Application pending·0 cites
- 4636US2012083409A1Tio2 nanoparticlesOKUYAMA HIDEO·Filed 2010·Application pending·0 cites
- 4731US5217850AOptical recording disk and manufacturing method thereofPIONEER ELECTRONIC CORP·Filed 1991·Granted Jun 8, 1993·2 cites·3 claims
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