Inventor · disambiguated record
Sumio Ashida
Also filed as: ASHIDA SUMIO
31 granted patents·15 pending applications·330 citations·filing 1987–2010
97Inventor score
Top patents by PatentIndex Score
46 records- 0194US7214416B2Phase-change optical recording mediumTOSHIBA KK·Filed 2004·Granted May 8, 2007·37 cites·7 claims
- 0294US6554972B1Information recording medium and its manufacturing methodTOSHIBA KK·Filed 1999·Granted Apr 29, 2003·67 cites·4 claims
- 0390US7455951B2Information recording medium and its manufacturing methodTOSHIBA KK·Filed 2006·Granted Nov 25, 2008·8 cites·2 claims
- 0489US8169879B2Optical recording system to record information with lightKAMIGUCHI YUUZO·Filed 2009·Granted May 1, 2012·12 cites·4 claims
- 0586US7245576B2Optical recording medium and optical recording-reproducing methodTOSHIBA KK·Filed 2004·Granted Jul 17, 2007·20 cites·22 claims
- 0685US7542404B2Optical recording mediaTOSHIBA KK·Filed 2005·Granted Jun 2, 2009·6 cites·22 claims
- 0783US7110348B2Optical information recording mediumTOSHIBA KK·Filed 2005·Granted Sep 19, 2006·4 cites·5 claims
- 0882US6805935B2Optical recording mediumTOSHIBA KK·Filed 2003·Granted Oct 19, 2004·14 cites·16 claims
- 0981US7858166B2Phase change recording mediumTOSHIBA KK·Filed 2007·Granted Dec 28, 2010·4 cites·16 claims
- 1080US7883930B2Phase change memory including a plurality of electrically conductive bodies, and manufacturing method thereofTOSHIBA KK·Filed 2008·Granted Feb 8, 2011·15 cites·3 claims
- 1180US6296915B1Optical recording mediumTOSHIBA KK·Filed 1999·Granted Oct 2, 2001·33 cites·14 claims
- 1278US7510990B2Sputtering target, optical thin film and manufacturing method thereof using the sputtering target, and optical recording mediumTOSHIBA KK·Filed 2006·Granted Mar 31, 2009·3 cites·10 claims
- 1377US7294382B2Phase-change optical recording mediumTOSHIBA KK·Filed 2006·Granted Nov 13, 2007·2 cites·15 claims
- 1477US7291375B2Phase-change optical recording mediumTOSHIBA KK·Filed 2006·Granted Nov 6, 2007·2 cites·12 claims
- 1576US6944116B2Optical information recording mediumTOSHIBA KK·Filed 2002·Granted Sep 13, 2005·9 cites·6 claims
- 1674US7510753B2Phase-change optical recording mediaTOSHIBA KK·Filed 2005·Granted Mar 31, 2009·2 cites·13 claims
- 1771US7767285B2Phase-change optical recording mediumTOSHIBA KK·Filed 2007·Granted Aug 3, 2010·1 cites·2 claims
- 1869US7335459B2Phase-change optical recording mediumTOSHIBA KK·Filed 2003·Granted Feb 26, 2008·7 cites·18 claims
- 1969US6842419B2Optical information recording medium and optical disk driveTOSHIBA KK·Filed 2002·Granted Jan 11, 2005·7 cites·6 claims
- 2069US4839861AInformation recording medium rewritable by utilizing two metastable phases of a recording layer and method using the sameTOSHIBA KK·Filed 1987·Granted Jun 13, 1989·16 cites·27 claims
- 2168US6240060B1Phase change optical recording mediumTOSHIBA KK·Filed 1999·Granted May 29, 2001·20 cites·17 claims
- 2266US7357969B2Phase-change optical recording mediumTOSHIBA KK·Filed 2004·Granted Apr 15, 2008·6 cites·9 claims
- 2366US7132147B2Phase-change optical recording mediumTOSHIBA KK·Filed 2004·Granted Nov 7, 2006·4 cites·14 claims
- 2465US5175714AMethod of magneto-optically recording/erasing information and magneto-optical information storage medium including recording and bias layers satisfying certain conditionsTOSHIBA KK·Filed 1989·Granted Dec 29, 1992·14 cites·10 claims
- 2561US7477586B2Optical disk apparatus for distinguishing recording media including single-layer and double-layer H-L media and L-H mediumTOSHIBA KK·Filed 2004·Granted Jan 13, 2009·4 cites·16 claims
- 2656US2006275577A1Phase-change optical recording mediumTOSHIBA KK·Filed 2006·Application pending·0 cites
- 2752US8487345B2Information recording and reproducing deviceTSUKAMOTO TAKAYUKI·Filed 2010·Granted Jul 16, 2013·1 cites·19 claims
- 2852US7736715B2Optical recording medium, and information recording/playback apparatus and method using the mediumTOSHIBA KK·Filed 2006·Granted Jun 15, 2010·0 cites·20 claims
- 2952US7643397B2Phase-change optical recording media and optical recording-reproducing apparatusTOSHIBA KK·Filed 2005·Granted Jan 5, 2010·0 cites·9 claims
- 3052US2008225681A1Optical recording mediumTOSHIBA KK·Filed 2008·Application pending·0 cites
- 3151US2008151729A1Optical recording medium and optical recording and reproducing apparatusTOSHIBA KK·Filed 2007·Application pending·0 cites
- 3250US2008080335A1Optical Recording Medium Utilizing Holography and Method for Manufacturing the Same and Optical Recording and Reproducing ApparatusTOSHIBA KK·Filed 2007·Application pending·0 cites
- 3350US2009141615A1Optical recording mediumNAKAI TSUKASA·Filed 2008·Application pending·0 cites
- 3449US2007230321A1Optical disk and optical disk deviceOOMACHI NORITAKE·Filed 2007·Application pending·0 cites
- 3548US2007077522A1Optical recording medium, method for reproducing information and optical information reproducing apparatusTOSHIBA KK·Filed 2006·Application pending·0 cites
- 3648US2007248785A1Optical recording medium, information recording and reproducing apparatus, and information recording and reproducing methodNAKAI TSUKASA·Filed 2007·Application pending·0 cites
- 3747US7011876B2Optical recording mediumTOSHIBA KK·Filed 2004·Granted Mar 14, 2006·0 cites·19 claims
- 3847US2006280066A1Information storage medium, medium processing apparatus, and medium processing methodYUSU KEIICHIRO·Filed 2006·Application pending·0 cites
- 3945US2003152867A1Information recording medium and its manufacturing methodTOSHIBA KK·Filed 2003·Application pending·0 cites
- 4045US2006068151A1Optical recording mediaASHIDA SUMIO·Filed 2005·Application pending·0 cites
- 4144US5412627AA magneto-optical recording system including a recording medium having a reversal preventive layer for preventing a magnetization reversal of a bias layer which is magnetostatically coupled to a recording layerTOSHIBA KK·Filed 1993·Granted May 2, 1995·7 cites·6 claims
- 4243US2005058034A1Information recording medium, method of recording information thereto, and information recording/reproducing apparatusFiled 2004·Application pending·0 cites
- 4342US5105400AMethod of magneto-optically recording and erasing information onto a magneto-optical information storage mediumTOSHIBA KK·Filed 1989·Granted Apr 14, 1992·5 cites·3 claims
- 4441US2004076908A1Phase change optical recording mediumTOSHIBA KK·Filed 2003·Application pending·0 cites
- 4540US2003161257A1Optical disk and method of producing the sameTOSHIBA KK·Filed 2003·Application pending·0 cites
- 4635US2006261379A1Phase change memory and manufacturing method thereofTOSHIBA KK·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →