Inventor · disambiguated record
Masafumi Nakamura
Also filed as: NAKAMURA MASAFUMI
62 granted patents·10 pending applications·1,251 citations·filing 1975–2022
99Inventor score
Files withHITACHI LTD27PANASONIC IP MAN CO LTD5BAYER MATERIALSCIENCE AG4HITACHI AMERICA LTD4HONDA MOTOR CO LTD4
Top patents by PatentIndex Score
72 records- 0199US6009237AOptical disk and optical disk reproduction apparatusHITACHI LTD·Filed 1997·Granted Dec 28, 1999·333 cites·6 claims
- 0296US5687275ATrick play data indentification methods and apparatus for use with digital video recording and playback devicesHITACHI AMERICA LTD·Filed 1995·Granted Nov 11, 1997·104 cites·23 claims
- 0394US6002834AOptical disk having table relating sector address and time and optical disk reproducing apparatusHITACHI LTD·Filed 1998·Granted Dec 14, 1999·145 cites·11 claims
- 0493US5729649AMethods and apparatus for recording data on a digital storage medium in a manner that facilitates the reading back of data during trick play operationHITACHI AMERICA LTD·Filed 1996·Granted Mar 17, 1998·64 cites·11 claims
- 0591US7927653B2Metal mold repair method and metal mold repair paste agentHONDA MOTOR CO LTD·Filed 2006·Granted Apr 19, 2011·8 cites·11 claims
- 0689US5768298AInformation recording method, reproducing method and reproducing apparatusHITACHI LTD·Filed 1996·Granted Jun 16, 1998·40 cites·22 claims
- 0785US6552711B1Display device and information terminalNEC CORP·Filed 2000·Granted Apr 22, 2003·28 cites·1 claims
- 0885US6549579B2Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumHITACHI LTD·Filed 2002·Granted Apr 15, 2003·10 cites·12 claims
- 0985US6314542B1Information recording method, reproducing method, and reproducing apparatusHITACHI LTD·Filed 2000·Granted Nov 6, 2001·13 cites·4 claims
- 1084US6181664B1Disk cartridge and disk device using the sameHITACHI LTD·Filed 2000·Granted Jan 30, 2001·13 cites·3 claims
- 1184US5623344ADigital video recording device with trick play capabilityHITACHI AMERICA LTD·Filed 1994·Granted Apr 22, 1997·50 cites·23 claims
- 1281US7655333B2Sub-micron solid oxide electrolyte membrane in a fuel cellUNIV LELAND STANFORD JUNIOR·Filed 2005·Granted Feb 2, 2010·6 cites·11 claims
- 1381US7138992B2Method of calibrating luminance of display, driving circuit of display employing same method and portable electronic device provided with same driving circuitNEC CORP·Filed 2002·Granted Nov 21, 2006·20 cites·12 claims
- 1480US12184118B2Backup power supply control system, backup power supply system, and moving vehiclePANASONIC IP MAN CO LTD·Filed 2021·Granted Dec 31, 2024·1 cites·20 claims
- 1580US9288289B2Portable device maintenance support apparatus, system, and methodYOKOGAWA ELECTRIC CORP·Filed 2013·Granted Mar 15, 2016·6 cites·16 claims
- 1679US4675855AReproducing rate control apparatus for information recording discHITACHI LTD·Filed 1984·Granted Jun 23, 1987·21 cites·8 claims
- 1779US4580255AServo circuit for a signal reproducing apparatusHITACHI LTD·Filed 1983·Granted Apr 1, 1986·21 cites·12 claims
- 1878US6076184AInformation recording method, reproducing method, and reproducing apparatusHITACHI LTD·Filed 1999·Granted Jun 13, 2000·20 cites·4 claims
- 1977US9738497B2Jib attachment/detachment mechanismTADANO LTD·Filed 2014·Granted Aug 22, 2017·5 cites·4 claims
- 2076US5974581AInformation recording method, reproducing method, and reproducing apparatusHITACHI LTD·Filed 1997·Granted Oct 26, 1999·19 cites·5 claims
- 2175US5589995AHeader information of information signal recording and reproducing method and apparatus thereforHITACHI LTD·Filed 1996·Granted Dec 31, 1996·19 cites·32 claims
- 2274US7556756B2Production method of polyurethane foam molded articleBAYER MATERIALSCIENCE AG·Filed 2005·Granted Jul 7, 2009·2 cites·7 claims
- 2374US7019927B2Information signal recording and playback method and apparatus thereforHITACHI LTD·Filed 2003·Granted Mar 28, 2006·6 cites·9 claims
- 2472US4581728APlural beam tracking servo including delay compensationHITACHI LTD·Filed 1983·Granted Apr 8, 1986·16 cites·3 claims
- 2568US6424477B1Information signal recording and playback method and apparatus thereforHITACHI LTD·Filed 1999·Granted Jul 23, 2002·13 cites·8 claims
- 2668US6308003B1Method of recording image data and method of reproducing information from optical diskHITACHI LTD·Filed 1999·Granted Oct 23, 2001·25 cites·4 claims
- 2768US5583650ADigital recording and playback device error correction methods and apparatus for use with trick play dataHITACHI AMERICA LTD·Filed 1995·Granted Dec 10, 1996·35 cites·22 claims
- 2867US6474196B2Method of producing press-forming punch and dieHONDA MOTOR CO LTD·Filed 2001·Granted Nov 5, 2002·9 cites·27 claims
- 2967US6438172B1Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumHITACHI LTD·Filed 1995·Granted Aug 20, 2002·19 cites·4 claims
- 3065US9013056B2Backup power source device and automobile equipped with samePANASONIC CORP·Filed 2013·Granted Apr 21, 2015·3 cites·5 claims
- 3164US6728408B1Water-mark embedding method and systemHITACHI LTD·Filed 1998·Granted Apr 27, 2004·35 cites·25 claims
- 3263US8236088B2Metal mold repair method and metal mold repair paste agentHASEGAWA MICHIHARU·Filed 2011·Granted Aug 7, 2012·1 cites·1 claims
- 3362US6836074B2Organic electro-luminescence display driving system and mobile communication terminal used this systemNEC CORP·Filed 2001·Granted Dec 28, 2004·11 cites·10 claims
- 3461US8295688B2Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumNAKAMURA MASAFUMI·Filed 2008·Granted Oct 23, 2012·0 cites·2 claims
- 3561US7805062B2Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumHITACHI CONSUMER ELECTRONICS·Filed 2008·Granted Sep 28, 2010·0 cites·2 claims
- 3659US6521157B2Method for fabricating press forming die and method for fabricating press forming punchHONDA MOTOR CO LTD·Filed 2000·Granted Feb 18, 2003·6 cites·4 claims
- 3759US2009067809A1Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumNAKAMURA MASAFUMI·Filed 2008·Application pending·0 cites
- 3858US4912524ADigital signal transmission system having conversion means for reducing the light emission time of a light emitting diodeHITACHI LTD·Filed 1987·Granted Mar 27, 1990·12 cites·1 claims
- 3955US12451722B2Backup power supply system, mobile object, backup power supply system controlling method, and programPANASONIC IP MAN CO LTD·Filed 2022·Granted Oct 21, 2025·0 cites·14 claims
- 4055US6657831B2Information signal recording and playback method and apparatus thereforHITACHI LTD·Filed 2002·Granted Dec 2, 2003·1 cites·8 claims
- 4154US3988406AMethod of providing a fibrous thermoplastic resin for depolymerization thereofASAHI CHEMICAL IND·Filed 1975·Granted Oct 26, 1976·15 cites·9 claims
- 4254US2009060460A1Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumNAKAMURA MASAFUMI·Filed 2008·Application pending·0 cites
- 4354US2009060461A1Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumNAKAMURA MASAFUMI·Filed 2008·Application pending·0 cites
- 4453US11998066B2Kigurumi staging support apparatus, kigurumi staging support system, and kigurumi staging support methodTHE POKEMON COMPANY·Filed 2021·Granted Jun 4, 2024·0 cites·16 claims
- 4553US6108299ADisk cartridge and disk device using the sameHITACHI LTD·Filed 1999·Granted Aug 22, 2000·7 cites·31 claims
- 4653US5992437AMethod for diluting acid or alkaline stock solution and apparatus thereforMITSUBISHI CHEM ENG CORP·Filed 1998·Granted Nov 30, 1999·27 cites·1 claims
- 4753US4947312ANon-resonance type AC power source apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Aug 7, 1990·14 cites·10 claims
- 4850US7602247B2Variable gain amplifier and AC power supply device using the samePANASONIC CORP·Filed 2006·Granted Oct 13, 2009·2 cites·5 claims
- 4950US6693966B2Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumHITACHI LTD·Filed 2002·Granted Feb 17, 2004·0 cites·8 claims
- 5050US5991260ADisk cartridge and disk device using the sameHITACHI LTD·Filed 1996·Granted Nov 23, 1999·6 cites·65 claims
Showing the top 50 of 72 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →