Inventor · disambiguated record
Katsumi Kawahara
Also filed as: KAWAHARA KATSUMI
18 granted patents·3 pending applications·545 citations·filing 1990–2005
96Inventor score
Top patents by PatentIndex Score
21 records- 0195US6858277B1Information recording medium and method for manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 22, 2005·50 cites·40 claims
- 0295US5194363AOptical recording medium and production process for the mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Mar 16, 1993·71 cites·15 claims
- 0393US6268034B1Optical information recording medium and method for producing the same, method for recording and reproducing information thereon and recording/reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jul 31, 2001·84 cites·73 claims
- 0491US6153063AOptical information recording medium, producing method thereof and method of recording/erasing/reproducing informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Nov 28, 2000·87 cites·23 claims
- 0586US6807142B1Optical information recording medium and method for initializing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 19, 2004·23 cites·23 claims
- 0681US6821707B2Optical information recording medium, producing method thereof and method of recording/erasing/reproducing informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Nov 23, 2004·27 cites·42 claims
- 0780US5681632AOptical information recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Oct 28, 1997·36 cites·19 claims
- 0878US5684778AInitialization process for a phase change recording medium with a zero level drop in flash light emissionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Nov 4, 1997·31 cites·36 claims
- 0976US7037413B1Optical information recording medium, producing method thereof and method of recording/erasing/reproducing informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted May 2, 2006·9 cites·4 claims
- 1076US6503690B1Optical information recording medium, method for producing the same, and method for recording and reproducing optical informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Jan 7, 2003·30 cites·20 claims
- 1173US5230973AMethod of recording and erasing information in an erasible optical recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Jul 27, 1993·17 cites·3 claims
- 1271US5151295AProcess for manufacturing an optical recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Sep 29, 1992·20 cites·27 claims
- 1370US5395669AOptical record mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Mar 7, 1995·19 cites·17 claims
- 1466US5453346AOptical information recording medium having protection layers with different properties on both sides of an optical active layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Sep 26, 1995·15 cites·20 claims
- 1555USRE36383EOptical recording medium and production process for the mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Nov 9, 1999·8 cites·16 claims
- 1652US6060221AMethod and apparatus for initializing optical recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted May 9, 2000·10 cites·14 claims
- 1747US2005089799A1Optical information recording medium, producing method thereof and method of recording/erasing/reproducing informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Application pending·0 cites
- 1842US5587216AOptical recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Dec 24, 1996·4 cites·2 claims
- 1941US5753334AOptical recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted May 19, 1998·4 cites·4 claims
- 2038US2005119123A1Information recording medium and method for manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Application pending·0 cites
- 2130US2005058941A1Information recording medium and method for manufacturing the sameMASUSHITA ELECTRIC IND CO LTD·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →