Inventor · disambiguated record
Ryuji Sugita
Also filed as: SUGITA RYUJI
43 granted patents·8 pending applications·866 citations·filing 1981–2009
98Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD37FUJIFILM CORP8FUJI PHOTO FILM CO LTD5JOHNSON CONTROLS TECH CO1
Top patents by PatentIndex Score
51 records- 0198US6347016B1Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Feb 12, 2002·292 cites·16 claims
- 0296US6433944B1Master carrier for magnetic transfer and method for transferFUJI PHOTO FILM CO LTD·Filed 1999·Granted Aug 13, 2002·125 cites·17 claims
- 0393US4613918APerpendicular magnetic playback head and a perpendicular magnetic recording and reproducing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Sep 23, 1986·46 cites·22 claims
- 0490US4687712AVertical magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1984·Granted Aug 18, 1987·67 cites·32 claims
- 0589US6606208B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 12, 2003·18 cites·11 claims
- 0686US6567227B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted May 20, 2003·14 cites·9 claims
- 0784US6606209B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 12, 2003·11 cites·5 claims
- 0882US6961196B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Nov 1, 2005·9 cites·23 claims
- 0978US4385098AMagnetic recording mediaMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted May 24, 1983·19 cites·7 claims
- 1077US7522362B2Amplitude servo pattern, magnetic recording medium and the manufacturing method, patterned magnetic transfer master substrate used in the manufacturing method, and magnetic recording/reproducing apparatusFUJIFILM CORP·Filed 2005·Granted Apr 21, 2009·3 cites·12 claims
- 1175US6887593B2Master information carrier for magnetic transferFUJI PHOTO FILM CO LTD·Filed 2003·Granted May 3, 2005·10 cites·11 claims
- 1274US7641282B2Locking device for seat backJOHNSON CONTROLS TECH CO·Filed 2008·Granted Jan 5, 2010·17 cites·5 claims
- 1372US6587290B2Master information carrier, method for producing the carrier, and method apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jul 1, 2003·5 cites·8 claims
- 1471US5901012AMagnetic recording and reproduction apparatus ring-type magnetic head for recording signals to recording medium having oblique axis of easy magnetizationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted May 4, 1999·20 cites·11 claims
- 1569US6590727B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jul 8, 2003·4 cites·12 claims
- 1666US5851660AMethod of fabricating a thin-film magnetic recording medium and thin-film magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Dec 22, 1998·19 cites·17 claims
- 1763US5679410AContinuous fabrication of thin film magnetic recording medium with vacuum depositionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 21, 1997·17 cites·10 claims
- 1860US5691008AMagnetic recording media fabrication methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Nov 25, 1997·11 cites·5 claims
- 1957US5912783AMagnetic recording and reproducing apparatus having ring-type magnetic head with metallic soft magnetic films of differing thicknessesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jun 15, 1999·11 cites·12 claims
- 2056US5534324AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jul 9, 1996·17 cites·8 claims
- 2155US7974028B2Magnetic transfer master carrier and magnetic transfer methodFUJIFILM CORP·Filed 2009·Granted Jul 5, 2011·0 cites·7 claims
- 2255US5418059AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted May 23, 1995·15 cites·4 claims
- 2353US7982984B2Magnetic transfer master carrier, magnetic transfer method, and magnetic recording mediumFUJIFILM CORP·Filed 2009·Granted Jul 19, 2011·0 cites·4 claims
- 2453US5472506AMethod and apparatus for producing magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Dec 5, 1995·9 cites·12 claims
- 2553US4399013AMethod of producing a magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Aug 16, 1983·9 cites·5 claims
- 2653US2010079892A1Method for producing magnetic transfer master carrier, magnetic transfer master carrier and magnetic transfer methodFUJIFILM CORP·Filed 2009·Application pending·0 cites
- 2753US2009303627A1Magnetic transfer master carrier, magnetic transfer method, and magnetic recording mediumFUJIFILM CORP·Filed 2009·Application pending·0 cites
- 2852US2009128958A1Master carrier for magnetic transfer and magnetic recording medium manufactured using the sameFUJI PHOTO FILM CO LTD·Filed 2008·Application pending·0 cites
- 2952US2009073593A1Master carrier for magnetic transfer, magnetic transfer method and magnetic recording mediumFUJIFILM CORP·Filed 2008·Application pending·0 cites
- 3051US6088178AMagnetic recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jul 11, 2000·9 cites·7 claims
- 3150US4477488AMethod of manufacturing magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Oct 16, 1984·8 cites·4 claims
- 3250US2008239533A1Method of magnetic transfer and magnetic recording mediumFUJIFILM CORP·Filed 2008·Application pending·0 cites
- 3349US2009244747A1Magnetic transfer master carrier and method for producing the sameFUJIFILM CORP·Filed 2009·Application pending·0 cites
- 3448US5087476AMethod of producing thin filmMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Feb 11, 1992·13 cites·13 claims
- 3548US4745005AMagnetic recording medium and method for making the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted May 17, 1988·11 cites·3 claims
- 3647US5569523AMagnetic recording medium having a ferromagnetic thin film in which 70% to 90% of the total magnetic particles have residual magnetization vectors within ±10° of the easy axis directionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 29, 1996·8 cites·6 claims
- 3745US2005277000A1Process for producing magnetic recording medium with limited coercivity squareness ratioFUJI PHOTO FILM CO LTD·Filed 2005·Application pending·0 cites
- 3843US5298282AProduction of magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Mar 29, 1994·5 cites·5 claims
- 3943US5202149AMethod for making a magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Apr 13, 1993·5 cites·6 claims
- 4043US4429016AMagnetic recording medium with vacuum deposited magnetic layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Jan 31, 1984·8 cites·3 claims
- 4141US2004038077A1Master carrier for magnetic transferFUJI PHOTO FILM CO LTD·Filed 2003·Application pending·0 cites
- 4240US5665460AMagnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Sep 9, 1997·7 cites·16 claims
- 4339US5458914AMethod for producing magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 17, 1995·3 cites·1 claims
- 4438US5554440AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Sep 10, 1996·6 cites·6 claims
- 4537US5679166AMagnetic recording media, magnetic recording media fabrication method, and fabrication equipmentMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 21, 1997·2 cites·8 claims
- 4635US5549936AManufacturing method of magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Aug 27, 1996·2 cites·21 claims
- 4734US5427869AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jun 27, 1995·2 cites·1 claims
- 4834US4999220AMethod for manufacturing perpendicular magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Mar 12, 1991·5 cites·11 claims
- 4933US4547398AMethod for manufacturing magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Oct 15, 1985·1 cites·4 claims
- 5029US5433999AMagnetic recording medium comprising specific backcoat layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jul 18, 1995·0 cites·6 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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