Inventor · disambiguated record
Katsuhiko Kumagawa
Also filed as: KUMAGAWA KATSUHIKO
39 granted patents·7 pending applications·1,055 citations·filing 1985–2012
98Inventor score
Top patents by PatentIndex Score
46 records- 0197US6583840B1Liquid crystal display element with comb electrodes having reflective projections and producing method thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jun 24, 2003·109 cites·9 claims
- 0297US6525798B1Liquid crystal display unitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 25, 2003·111 cites·7 claims
- 0392US6963335B2Active matrix type display apparatus method for driving the same, and display elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Nov 8, 2005·46 cites·22 claims
- 0492US6819646B1Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 16, 2004·31 cites·4 claims
- 0592US6633272B1Driving method, drive IC and drive circuit for liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 14, 2003·49 cites·5 claims
- 0689US6909415B2Display unit and drive method thereforMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jun 21, 2005·40 cites·76 claims
- 0789US5748276ALiquid crystal display unit with a plurality of subpixelsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted May 5, 1998·97 cites·6 claims
- 0888US7030848B2Liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Apr 18, 2006·29 cites·5 claims
- 0988US6801293B1Method for manufacturing an in-plane electric field mode liquid crystal elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 5, 2004·39 cites·2 claims
- 1086US9117778B2Display deviceYANAGAWA HIROTO·Filed 2012·Granted Aug 25, 2015·16 cites·12 claims
- 1186US5610739ALiquid crystal display unit with a plurality of subpixelsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Mar 11, 1997·81 cites·2 claims
- 1285US6774963B1Liquid-crystal display deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 10, 2004·30 cites·20 claims
- 1383US6900852B2Active matrix liquid crystal display elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted May 31, 2005·25 cites·16 claims
- 1482US6965367B2DisplayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Nov 15, 2005·24 cites·14 claims
- 1582US6697141B2Liquid crystal display with opaque common electrodes over the video signal lines and fabrication method thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Feb 24, 2004·21 cites·3 claims
- 1680US6933916B2Liquid crystal display and its driving methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Aug 23, 2005·21 cites·24 claims
- 1780US5166817ALiquid crystal display with compensation means of multiaxially elongated high polymer filmsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1988·Granted Nov 24, 1992·44 cites·3 claims
- 1880US4775549AMethod of producing a substrate structure for a large size display panel and an apparatus for producing the substrate structureMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Oct 4, 1988·40 cites·22 claims
- 1979US6850309B2Liquid crystal display device with a plurality of projections having different heights and process for manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Feb 1, 2005·17 cites·3 claims
- 2077US7035192B2Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Apr 25, 2006·8 cites·4 claims
- 2176US7499115B2Display and its driving methodPANASONIC CORP·Filed 2001·Granted Mar 3, 2009·14 cites·2 claims
- 2274US7173609B2Image display apparatus and image display methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Feb 6, 2007·11 cites·24 claims
- 2374US6914644B2Liquid crystal deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jul 5, 2005·14 cites·4 claims
- 2474US6232944B1Driving method, drive IC and drive circuit for liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted May 15, 2001·35 cites·7 claims
- 2570US6801264B2Liquid crystal display deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Oct 5, 2004·10 cites·4 claims
- 2666US7215476B2Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted May 8, 2007·4 cites·12 claims
- 2766US7034790B2Liquid crystal display drive method and liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Apr 25, 2006·9 cites·62 claims
- 2866US6522318B1Driving method, drive IC and drive circuit for liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 18, 2003·7 cites·2 claims
- 2965US7161574B2Liquid crystal display element driving method and liquid crystal display using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jan 9, 2007·8 cites·26 claims
- 3065US6816208B2Liquid crystal display deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Nov 9, 2004·9 cites·3 claims
- 3164US6906769B2Liquid crystal screen displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jun 14, 2005·6 cites·20 claims
- 3264US6896940B2Liquid crystal screen displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted May 24, 2005·6 cites·3 claims
- 3364US6781659B2Liquid crystal display device, pixels repair method thereof, and drive method thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Aug 24, 2004·9 cites·7 claims
- 3463US6850303B2Liquid crystal display device having additional storage capacitanceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Feb 1, 2005·8 cites·5 claims
- 3563US6717628B2Liquid crystal display deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Apr 6, 2004·7 cites·1 claims
- 3661US6762816B1Liquid crystal display with special electrode configurations and compositions and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jul 13, 2004·6 cites·6 claims
- 3759US6597337B1Driving method, drive IC and drive circuit for liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jul 22, 2003·4 cites·6 claims
- 3856US2007063944A1Image display apparatus and image display methodSATO ICHIRO·Filed 2006·Application pending·0 cites
- 3956US2006119566A1Liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2006·Application pending·0 cites
- 4056US2006114204A1Liquid crystal displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2006·Application pending·0 cites
- 4154US2009174828A1Display device and driving method thereofPANASONIC CORP·Filed 2009·Application pending·0 cites
- 4252US2011007050A1Image display apparatus and image display methodSATO ICHIRO·Filed 2010·Application pending·0 cites
- 4348USRE41237EActive matrix type display apparatus, method for driving the same, and display elementPANASONIC CORP·Filed 2001·Granted Apr 20, 2010·2 cites·37 claims
- 4448US6787829B2LCD panelMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Sep 7, 2004·8 cites·39 claims
- 4543US2005099581A1Liquid crystal display device with a plurality of projections having different heights and process for manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Application pending·0 cites
- 4642US2004100602A1Liquid crystal screen displayMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →