Inventor · disambiguated record
Yuji Takagi
Also filed as: TAKAGI YUJI
198 granted patents·31 pending applications·5,428 citations·filing 1986–2025
99Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD59HITACHI LTD47HITACHI HIGH TECH CORP40TOKAI RUBBER IND LTD12HONDA MOTOR CO LTD10
Top patents by PatentIndex Score
229 records- 0199US5986263AElectron beam inspection method and apparatus and semiconductor manufacturing method and its manufacturing line utilizing the sameHITACHI LTD·Filed 1997·Granted Nov 16, 1999·164 cites·21 claims
- 0299US5237553AData recording and reproducing apparatus having a plurality of operating modesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Aug 17, 1993·421 cites·7 claims
- 0399US4949326AOptical information recording and reproducing system using optical disks having an error correction functionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Aug 14, 1990·143 cites·7 claims
- 0498US6938162B1Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 30, 2005·278 cites·28 claims
- 0598US6875984B2Bio electron microscope and observation method of specimenHITACHI LTD·Filed 2003·Granted Apr 5, 2005·105 cites·14 claims
- 0698US5801965AMethod and system for manufacturing semiconductor devices, and method and system for inspecting semiconductor devicesHITACHI LTD·Filed 1994·Granted Sep 1, 1998·230 cites·10 claims
- 0798US5428597AMulti-layered optical disk with track and layer identificationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Jun 27, 1995·108 cites·15 claims
- 0898US5023854ADisc having a data read-only area and a data recording arm and a recording reproducing system thereforMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Jun 11, 1991·134 cites·3 claims
- 0998US4984230ARewritable optical disk with defective-sector substitution arrangement and optical information recording and reproducing systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Jan 8, 1991·110 cites·11 claims
- 1097US6134214AMethod for substituting defective recording of discoid recording medium and discoid recording medium recording and reproducing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Oct 17, 2000·82 cites·4 claims
- 1197US5270877AInformation recording medium and information recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Dec 14, 1993·99 cites·8 claims
- 1296US6876445B2Method for analyzing defect data and inspection apparatus and review systemHITACHI LTD·Filed 2002·Granted Apr 5, 2005·61 cites·17 claims
- 1396US6314078B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 6, 2001·40 cites·5 claims
- 1496US5303225AMulti-layered optical disk with track and layer identificationMATSHUSHITA ELECTRICAL IND CO·Filed 1990·Granted Apr 12, 1994·92 cites·14 claims
- 1595US6301220B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 9, 2001·32 cites·22 claims
- 1695US5173886AComposite optical disc having both a data read-only area and a data rewritable area, and a recording/reproducing system for use therewithMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Dec 22, 1992·87 cites·1 claims
- 1794US7274813B2Defect inspection method and apparatusHITACHI LTD·Filed 2005·Granted Sep 25, 2007·18 cites·24 claims
- 1894US7170593B2Method of reviewing detected defectsHITACHI LTD·Filed 2005·Granted Jan 30, 2007·25 cites·9 claims
- 1994US6351447B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 26, 2002·29 cites·2 claims
- 2094US5475668AMethod of producing file management structures, information reproduction apparatus and information reproducing methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Dec 12, 1995·73 cites·10 claims
- 2194US5406534ADouble-sided recordable optical disk suitable for a substituting process and a method for performing defect managementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Apr 11, 1995·76 cites·17 claims
- 2294US4823333AOptical disk duplicating apparatus using sector data identification information for controlling duplicationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Apr 18, 1989·59 cites·7 claims
- 2393US9511427B2Cutting insert and indexable insert-type cutting toolMITSUBISHI MATERIALS CORP·Filed 2014·Granted Dec 6, 2016·13 cites·13 claims
- 2493US8107717B2Defect inspection method and apparatusMAEDA SHUNJI·Filed 2011·Granted Jan 31, 2012·14 cites·16 claims
- 2593US7114526B2Composite hose with a corrugated metal tubeTOKAI RUBBER IND INC·Filed 2005·Granted Oct 3, 2006·31 cites·2 claims
- 2693US7084968B2Method for analyzing defect data and inspection apparatus and review systemHITACHI HIGH TECH CORP·Filed 2005·Granted Aug 1, 2006·15 cites·24 claims
- 2793US6549499B2Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Apr 15, 2003·24 cites·14 claims
- 2893US6546308B2Method and system for manufacturing semiconductor devices, and method and system for inspecting semiconductor devicesHITACHI LTD·Filed 2001·Granted Apr 8, 2003·61 cites·7 claims
- 2993US5517484AOptical disk and optical disk recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted May 14, 1996·69 cites·25 claims
- 3093US5388105AMethod of recording/reproducing optical disk dataMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Feb 7, 1995·99 cites·6 claims
- 3193US5202876AOptical disc recording-reproducing apparatus in which sector substitution of defective sectors is performedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Apr 13, 1993·66 cites·6 claims
- 3292US6865288B1Pattern inspection method and apparatusHITACHI LTD·Filed 2000·Granted Mar 8, 2005·75 cites·20 claims
- 3392US6587581B1Visual inspection method and apparatus thereforHITACHI LTD·Filed 1998·Granted Jul 1, 2003·118 cites·59 claims
- 3492US6496455B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 17, 2002·21 cites·7 claims
- 3592US6172365B1Electron beam inspection method and apparatus and semiconductor manufacturing method and its manufacturing line utilizing the sameHITACHI LTD·Filed 1999·Granted Jan 9, 2001·48 cites·10 claims
- 3691US7653866B2Data recording method, recording medium and reproduction apparatusPANASONIC CORP·Filed 2007·Granted Jan 26, 2010·7 cites·2 claims
- 3791US7272772B2Data recording method, recording medium and reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2006·Granted Sep 18, 2007·7 cites·3 claims
- 3891US7231079B2Method and system for inspecting electronic circuit patternHITACHI LTD·Filed 2002·Granted Jun 12, 2007·44 cites·27 claims
- 3991US7113628B1Defect image classifying method and apparatus and a semiconductor device manufacturing process based on the method and apparatusHITACHI LTD·Filed 2000·Granted Sep 26, 2006·54 cites·3 claims
- 4091US7111222B2Data recording method, recording medium and reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Sep 19, 2006·21 cites·12 claims
- 4191US6947587B1Defect inspection method and apparatusHITACHI LTD·Filed 1999·Granted Sep 20, 2005·88 cites·30 claims
- 4291US6909930B2Method and system for monitoring a semiconductor device manufacturing processHITACHI LTD·Filed 2002·Granted Jun 21, 2005·52 cites·37 claims
- 4391US6373054B2Electron beam inspection method and apparatus and semiconductor manufacturing method and its manufacturing line utilizing the sameHITACHI LTD·Filed 2001·Granted Apr 16, 2002·23 cites·22 claims
- 4491US5872767AOptical disk and an optical disk recording/reproduction device having address blocks located on boundary lines between adjoining tracksMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Feb 16, 1999·59 cites·11 claims
- 4591US5077720AOptical information recording and reproducing system and optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Dec 31, 1991·50 cites·3 claims
- 4691US4821254AInformation recording and reproducing apparatus which detects deterioration of a medium in each sector before recordingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1986·Granted Apr 11, 1989·47 cites·8 claims
- 4791US4742517AInterleaving circuitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1986·Granted May 3, 1988·57 cites·5 claims
- 4890US9401015B2Defect classification method, and defect classification systemMINEKAWA YOHEI·Filed 2012·Granted Jul 26, 2016·12 cites·14 claims
- 4990US7281191B2Data recording method, recording medium and reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2006·Granted Oct 9, 2007·6 cites·3 claims
- 5090US6678227B1Simultaneous recording and reproduction apparatus and simultaneous multi-channel reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jan 13, 2004·56 cites·20 claims
Showing the top 50 of 229 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →