Inventor · disambiguated record
Kenji Koishi
Also filed as: KOISHI KENJI
98 granted patents·4 pending applications·2,698 citations·filing 1981–2011
99Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD84PANASONIC CORP11KOISHI KENJI2VICTOR COMPANY OF JAPAN2GOTOH YOSHIHO1
Top patents by PatentIndex Score
102 records- 0199US6081785AOptical disk, optical recorder, optical reproducer, crytocommunication system and program license systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jun 27, 2000·197 cites·5 claims
- 0299US6052465AOptical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Apr 18, 2000·176 cites·5 claims
- 0398US7520001B2Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskPANASONIC CORP·Filed 2006·Granted Apr 14, 2009·23 cites·11 claims
- 0498US6266299B1Magneto-optical disk having write-once identification marks and method for recording thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jul 24, 2001·155 cites·20 claims
- 0597US6845071B2Optical disc apparatus and recording power determining method thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jan 18, 2005·62 cites·12 claims
- 0697US6611481B1Optical recording/reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 26, 2003·91 cites·27 claims
- 0797US5850382AOptical disk having a rewritable area and a read-only areaMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Dec 15, 1998·181 cites·22 claims
- 0897US4688203AOptical recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1984·Granted Aug 18, 1987·59 cites·4 claims
- 0996US6885629B2Recordable optical disk including an auxiliary information presence indicatorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Apr 26, 2005·32 cites·1 claims
- 1096US6633853B2Recordable optical disk encrypted with disk identification and multiple keysMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Oct 14, 2003·65 cites·4 claims
- 1196US4535439AOptical having index mark and sector markMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Aug 13, 1985·54 cites·4 claims
- 1295US7110544B2Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Sep 19, 2006·23 cites·4 claims
- 1395US6457128B1Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Sep 24, 2002·24 cites·8 claims
- 1495US5119363AOptical disk having an index markMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Jun 2, 1992·52 cites·25 claims
- 1594US4566088AOptical and reversible recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Jan 21, 1986·45 cites·5 claims
- 1694US4545044AMethod and apparatus for optically recording and reproducing informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Oct 1, 1985·49 cites·14 claims
- 1794US4509156ASemiconductor laser driving systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Apr 2, 1985·49 cites·4 claims
- 1893US7272095B2Optical data recording methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Sep 18, 2007·25 cites·3 claims
- 1993US6600706B1Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jul 29, 2003·17 cites·11 claims
- 2093US4800548AOptical recording and reproducing apparatus with abnormality detectorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Jan 24, 1989·54 cites·8 claims
- 2192US6510116B1Optical information recording/reproducing method and optical information recording/reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jan 21, 2003·36 cites·14 claims
- 2292US6285762B1Optical disk, optical disk barcode forming method, optical disk reproduction apparatus, marking forming apparatus, method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Sep 4, 2001·30 cites·4 claims
- 2391US6343282B1Optical disk reading device using both a decipher key and disk identification informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jan 29, 2002·35 cites·8 claims
- 2491US6278671B1Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 21, 2001·14 cites·8 claims
- 2591US5719843AMethod of maximum likelihood decoding and digital information playback apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Feb 17, 1998·83 cites·19 claims
- 2691US5420690AOptical information recording/reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted May 30, 1995·56 cites·3 claims
- 2791US4564931AOptical recording and reproducing headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Jan 14, 1986·34 cites·8 claims
- 2891US4523304AOptical data recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Jun 11, 1985·37 cites·13 claims
- 2990US4546462AOptical data recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Oct 8, 1985·37 cites·11 claims
- 3089US6208736B1Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Mar 27, 2001·24 cites·15 claims
- 3189US6175629B1Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jan 16, 2001·24 cites·10 claims
- 3288US7151728B2Optical disc apparatus and recording power determining method thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Dec 19, 2006·5 cites·4 claims
- 3388US6728178B2Semiconductor laser control method and semiconductor laser control deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Apr 27, 2004·27 cites·23 claims
- 3488US6160888AOptical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 12, 2000·22 cites·7 claims
- 3588US6122373AOptical disk, optical disk barcode forming method, optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Sep 19, 2000·22 cites·13 claims
- 3688US4484319AApparatus for locating a track on disc-like optical information carriersMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Nov 20, 1984·34 cites·2 claims
- 3787US7489614B2Recording method and media having marks and spaces with lengths defined by a predetermined modulation methodPANASONIC CORP·Filed 2007·Granted Feb 10, 2009·4 cites·3 claims
- 3887US6778969B2Method and apparatus for encrypting and recording received content information on a recording medium using both medium identification information and a cipher key for encryptionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Aug 17, 2004·12 cites·8 claims
- 3987US6584046B2Method for reproducing information data from magneto-optical recording medium using linear polarized beamMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jun 24, 2003·16 cites·6 claims
- 4087US6490302B1Semiconductor laser control circuit and laser light sourceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 3, 2002·29 cites·20 claims
- 4187US5737481AInformation recording method, information recording apparatus and information recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Apr 7, 1998·101 cites·26 claims
- 4287US4426693ALight source intensity control in an optical recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Jan 17, 1984·31 cites·2 claims
- 4386US6862685B2Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Mar 1, 2005·8 cites·3 claims
- 4486US6298138B1Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 2, 2001·8 cites·6 claims
- 4585US7103781B2Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Sep 5, 2006·7 cites·3 claims
- 4685US4701609ASemiconductor laser drive circuit with peak detection and controlMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Oct 20, 1987·35 cites·3 claims
- 4784US6229896B1Optical disk, an optical barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted May 8, 2001·16 cites·4 claims
- 4883US7414924B2Magneto-optical recording medium having watermark for preventing unauthorized copyMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Aug 19, 2008·3 cites·4 claims
- 4983US6611820B2Recording medium, recorder, reproducer, cryptocommunication system and program license systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Aug 26, 2003·20 cites·10 claims
- 5083US6301569B1Optical disk, optical recorder, optical reproducer, cryptocommunication system and program license systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Oct 9, 2001·22 cites·5 claims
Showing the top 50 of 102 patent records by PatentIndex Score.
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