Inventor · disambiguated record
Kenji Tagawa
Also filed as: TAGAWA KENJI
46 granted patents·3 pending applications·1,979 citations·filing 1990–2025
99Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD20FUJITSU LTD10PANASONIC CORP7SHIMANO KK6TAGAWA KENJI4
Top patents by PatentIndex Score
49 records- 0199US6832293B1Audio playback apparatus and method for resuming interrupted playback recordingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 14, 2004·130 cites·10 claims
- 0298US6947728B2Mobile phone with music reproduction function, music data reproduction method by mobile phone with music reproduction function, and the program thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Sep 20, 2005·236 cites·5 claims
- 0398US6865431B1Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Mar 8, 2005·163 cites·5 claims
- 0498US6351442B1Recording medium, recording apparatus and reproduction apparatus with reproduction path flag informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Feb 26, 2002·130 cites·7 claims
- 0596US7380139B2Digital data recording apparatus, digital data recording method, and computer-readable recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted May 27, 2008·55 cites·10 claims
- 0696US6834348B1Digital data recording apparatus, digital data recording method, and computer-readable recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 21, 2004·90 cites·10 claims
- 0796US6636773B1Semiconductor memory card, apparatus for recording data onto the semiconductor memory card, and apparatus for reproducing data of the semiconductor memory cardMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 21, 2003·86 cites·14 claims
- 0896US6615192B1Contents copying system, copying method, computer-readable recording medium and disc drive copying contents but not a cipher key via a host computerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Sep 2, 2003·170 cites·2 claims
- 0995US6647496B1Semiconductor memory cardMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 11, 2003·70 cites·9 claims
- 1094US7096504B1Distribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 22, 2006·104 cites·13 claims
- 1193US6118445ASystem stream reproduction control information editing apparatus and a recording medium on which the method used therein is recordedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Sep 12, 2000·89 cites·8 claims
- 1291US7869580B2Mobile phone with music reproduction function, music data reproduction method by mobile phone with music reproduction function, and the program thereofPANASONIC CORP·Filed 2005·Granted Jan 11, 2011·18 cites·6 claims
- 1391US6393196B1Multimedia stream generating method enabling alternative reproduction of video data, and a multimedia optical disk authoring systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted May 21, 2002·143 cites·20 claims
- 1491US5764404AWavelength-division-multiplexing optical amplifierFUJITSU LTD·Filed 1995·Granted Jun 9, 1998·99 cites·9 claims
- 1590US7315829B1Data conversion apparatus and method in copyright protecting systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jan 1, 2008·64 cites·12 claims
- 1689US6779116B2Playback apparatus and playback methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Aug 17, 2004·29 cites·4 claims
- 1787USRE42019EDistribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving methodPANASONIC CORP·Filed 2008·Granted Dec 28, 2010·13 cites·22 claims
- 1881US8261056B2Digital data recording apparatus, digital data recording method, and computer-readable recording mediumTAGAWA KENJI·Filed 2010·Granted Sep 4, 2012·4 cites·12 claims
- 1979US5467218AOptical fiber amplifierFUJITSU LTD·Filed 1994·Granted Nov 14, 1995·36 cites·27 claims
- 2076US7596698B2Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording mediumPANASONIC CORP·Filed 2004·Granted Sep 29, 2009·11 cites·5 claims
- 2176US5155621AOptical fiber amplifierFUJITSU LTD·Filed 1991·Granted Oct 13, 1992·36 cites·1 claims
- 2275US5745283AMethod and apparatus for controlling optical amplifier used for optically amplifying wavelength-division multiplexed signalFUJITSU LTD·Filed 1996·Granted Apr 28, 1998·49 cites·26 claims
- 2374US5065011APhotodetector module for coupling with optical fiberFUJITSU LTD·Filed 1990·Granted Nov 12, 1991·44 cites·9 claims
- 2473US7805617B2Digital data recording apparatus, digital data recording method, and computer-readable recording mediumPANASONIC CORP·Filed 2008·Granted Sep 28, 2010·1 cites·8 claims
- 2572US8175441B2Playback programTAGAWA KENJI·Filed 2008·Granted May 8, 2012·1 cites·2 claims
- 2671US7930478B2Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method and a computer-readable storage mediumPANASONIC CORP·Filed 2008·Granted Apr 19, 2011·1 cites·6 claims
- 2771US5508842AOptical amplifierFUJITSU LTD·Filed 1994·Granted Apr 16, 1996·30 cites·12 claims
- 2870US12434716B2Human-powered vehicle control device, learning method, human-powered vehicle control method and computer programSHIMANO KK·Filed 2023·Granted Oct 7, 2025·0 cites·22 claims
- 2970US7471878B2Playback programPANASONIC CORP·Filed 2004·Granted Dec 30, 2008·6 cites·3 claims
- 3069US7392342B2Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and a computer-readable storage mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Jun 24, 2008·5 cites·8 claims
- 3166US6661746B2Rewritable recording medium with multiple reproduction path information for common digital dataMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Dec 9, 2003·4 cites·4 claims
- 3265US8718237B2Mobile phone with music reproduction function, music data reproduction method by mobile phone with music reproduction function, and the program thereofTAGAWA KENJI·Filed 2010·Granted May 6, 2014·1 cites·9 claims
- 3362US8126311B2Recording medium, recording apparatus and reproduction apparatusTAGAWA KENJI·Filed 2008·Granted Feb 28, 2012·0 cites·4 claims
- 3461US7400819B2Recording medium, recording apparatus and reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Jul 15, 2008·2 cites·7 claims
- 3560US7212875B2Semiconductor memory card, apparatus for recording data onto the semiconductor memory card, and apparatus for reproducing data of the semiconductor memory cardMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted May 1, 2007·3 cites·4 claims
- 3659US8156347B2Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording mediumHIROTA TERUTO·Filed 2009·Granted Apr 10, 2012·0 cites·5 claims
- 3759US6738319B2Recording medium, recording apparatus and reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted May 18, 2004·2 cites·4 claims
- 3858US2024053146A1Control device for human-powered vehicleSHIMANO KK·Filed 2023·Application pending·0 cites
- 3957US7010372B2Semiconductor memory card, apparatus for recording data onto the semiconductor memory card, and apparatus for reproducing data of the semiconductor memory cardMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Mar 7, 2006·4 cites·2 claims
- 4057US2025271866A1Human-powered vehicle control device, method of controlling human-powered vehicle, and computer programSHIMANO KK·Filed 2025·Application pending·0 cites
- 4156US5327282AOptical amplifier for 1.3 μm bandFUJITSU LTD·Filed 1993·Granted Jul 5, 1994·15 cites·16 claims
- 4254US12162565B2Human-powered vehicle control deviceSHIMANO KK·Filed 2021·Granted Dec 10, 2024·0 cites·21 claims
- 4354USRE41096EDistribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving methodPANASONIC CORP·Filed 2008·Granted Feb 2, 2010·0 cites·14 claims
- 4452US2023182858A1Human-powered vehicle control device, learning model creation method, learning model, human-powered vehicle control method and computer programSHIMANO KK·Filed 2022·Application pending·0 cites
- 4549US5140598AFiber optic amplifierFUJITSU LTD·Filed 1991·Granted Aug 18, 1992·17 cites·8 claims
- 4644US5276549AOptical transmitter including rare earth-doped fiberFUJITSU LTD·Filed 1992·Granted Jan 4, 1994·10 cites·5 claims
- 4743US12136041B2Detection device, detection method, generation method, computer program, and storage mediumSHIMANO KK·Filed 2020·Granted Nov 5, 2024·0 cites·30 claims
- 4842US10591310B2Travel information providing method, travel information providing apparatus, and non-transitory recording mediumPANASONIC IP CORP AMERICA·Filed 2017·Granted Mar 17, 2020·0 cites·18 claims
- 4939US6061173AWavelength-division-multiplexing optical amplifierFUJITSU LTD·Filed 1998·Granted May 9, 2000·8 cites·3 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →