Inventor · disambiguated record
Tsuyoshi Ishikawa
Also filed as: ISHIKAWA TSUYOSHI
120 granted patents·49 pending applications·2,812 citations·filing 1986–2025
99Inventor score
Top patents by PatentIndex Score
169 records- 0199US5600455APrismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surfaceENPLAS CORP·Filed 1994·Granted Feb 4, 1997·231 cites·7 claims
- 0299US5584556ASurface light source deviceENPLAS CORP·Filed 1992·Granted Dec 17, 1996·325 cites·30 claims
- 0398US5971559ASurface light source deviceENPLAS CORP·Filed 1998·Granted Oct 26, 1999·211 cites·10 claims
- 0497US11868517B2Information processing apparatus and information processing methodSONY GROUP CORP·Filed 2022·Granted Jan 9, 2024·5 cites·16 claims
- 0597US5779338ASurface light source deviceENPLAS CORP·Filed 1996·Granted Jul 14, 1998·195 cites·14 claims
- 0696US5575549ASurface light source deviceENPLAS CORP·Filed 1994·Granted Nov 19, 1996·157 cites·3 claims
- 0795US11449133B2Information processing apparatus and information processing methodSONY CORP·Filed 2021·Granted Sep 20, 2022·3 cites·10 claims
- 0895US10452128B2Information processing apparatus and information processing methodSONY CORP·Filed 2016·Granted Oct 22, 2019·8 cites·26 claims
- 0995US9136372B2Silicon carbide semiconductor deviceMIYAHARA SHINICHIRO·Filed 2012·Granted Sep 15, 2015·37 cites·1 claims
- 1095US5967637ATapered light guide plate for surface light source device and method of making by injection molding via supplementary cavityENPLAS CORP·Filed 1995·Granted Oct 19, 1999·90 cites·14 claims
- 1195US5718497ASurface light source deviceENPLAS CORP·Filed 1995·Granted Feb 17, 1998·144 cites·16 claims
- 1294US6241358B1Tandem lighting panelNITTO JUSHI KOGYO KABUSHIKI KA·Filed 1999·Granted Jun 5, 2001·182 cites·7 claims
- 1392US5629799AChromatic aberration correcting element and its applicationASAHI OPTICAL CO LTD·Filed 1993·Granted May 13, 1997·79 cites·4 claims
- 1491US5921651ASurface light source device of side light type having diffusing element with improved distribution pattern of lightENPLAS CORP·Filed 1996·Granted Jul 13, 1999·110 cites·3 claims
- 1588US10948977B2Information processing apparatus and information processing methodSONY CORP·Filed 2019·Granted Mar 16, 2021·3 cites·8 claims
- 1687US2025335022A1Information processing apparatus and information processing methodSONY GROUP CORP·Filed 2025·Application pending·0 cites
- 1786US12314473B2Information processing apparatus, information processing method, and programSONY GROUP CORP·Filed 2022·Granted May 27, 2025·1 cites·18 claims
- 1886US12260025B2Information processing apparatus, information processing method, and programSONY GROUP CORP·Filed 2022·Granted Mar 25, 2025·1 cites·20 claims
- 1986US5572411ASurface light source deviceENPLAS CORP·Filed 1994·Granted Nov 5, 1996·72 cites·8 claims
- 2085US5402324ASurface illuminant deviceENPLAS CORP·Filed 1994·Granted Mar 28, 1995·67 cites·1 claims
- 2184US12353613B2Information processing apparatus and information processing methodSONY GROUP CORP·Filed 2023·Granted Jul 8, 2025·0 cites·18 claims
- 2284US12299790B2Information processing apparatus and information processing methodSONY GROUP CORP·Filed 2023·Granted May 13, 2025·0 cites·13 claims
- 2384US9261640B2Liquid crystal display apparatusUNIV KEIO·Filed 2013·Granted Feb 16, 2016·7 cites·5 claims
- 2484US7582901B2Semiconductor device comprising metal insulator metal (MIM) capacitorHITACHI LTD·Filed 2005·Granted Sep 1, 2009·12 cites·7 claims
- 2584US7374116B2Circulation type media agitator millASHIZAWA FINETECH LTD·Filed 2005·Granted May 20, 2008·15 cites·6 claims
- 2684US5818555ASurface light source deviceENPLAS CORP·Filed 1994·Granted Oct 6, 1998·64 cites·18 claims
- 2784US5450292ASurface light source deviceENPLAS CORP·Filed 1993·Granted Sep 12, 1995·56 cites·19 claims
- 2882US5577675AAgitating pulverizerMITSUI MINING CO LTD·Filed 1995·Granted Nov 26, 1996·35 cites·12 claims
- 2982US5257092AApparatus for measuring polarization and birefringenceASAHI OPTICAL CO LTD·Filed 1991·Granted Oct 26, 1993·57 cites·16 claims
- 3081US8575689B2Silicon carbide semiconductor device and manufacturing method of the sameMIMURA TOMOHIRO·Filed 2011·Granted Nov 5, 2013·9 cites·3 claims
- 3181US5769522ASurface light source deviceENPLAS CORP·Filed 1996·Granted Jun 23, 1998·59 cites·16 claims
- 3281US5414599ASurface light source deviceENPLAS CORP·Filed 1992·Granted May 9, 1995·48 cites·20 claims
- 3380US11480787B2Information processing apparatus and information processing methodSONY CORP·Filed 2019·Granted Oct 25, 2022·2 cites·20 claims
- 3480US9261731B2Liquid crystal display apparatusUNIV KEIO·Filed 2013·Granted Feb 16, 2016·5 cites·9 claims
- 3580US6815384B2Method for manufacturing sintered piecePENTAX CORP·Filed 2002·Granted Nov 9, 2004·9 cites·17 claims
- 3679US6478438B1Side light type surface light source deviceENPLAS CORP·Filed 2000·Granted Nov 12, 2002·21 cites·4 claims
- 3779US5810464ASurface light source device of side light typeENPLAS CORP·Filed 1996·Granted Sep 22, 1998·53 cites·8 claims
- 3878US11695908B2Information processing apparatus and information processing methodSONY CORP·Filed 2019·Granted Jul 4, 2023·2 cites·8 claims
- 3978US11094097B2Information processing apparatus and information processing methodSONY CORP·Filed 2018·Granted Aug 17, 2021·1 cites·19 claims
- 4078US7150862B2Method of manufacturing powderPENTAX CORP·Filed 2003·Granted Dec 19, 2006·11 cites·25 claims
- 4178US5791569ACrushing apparatusMITSUI MINING CO LTD·Filed 1997·Granted Aug 11, 1998·29 cites·18 claims
- 4277US5652745AOptical system using polarized light with prevention of effect of birefringenceASAHI OPTICAL CO LTD·Filed 1994·Granted Jul 29, 1997·24 cites·10 claims
- 4376US11861773B2Information processing apparatus and information processing methodSONY GROUP CORP·Filed 2023·Granted Jan 2, 2024·0 cites·18 claims
- 4476US8972486B2Terminal apparatus, processing system, processing method, and programISHIKAWA TSUYOSHI·Filed 2011·Granted Mar 3, 2015·4 cites·18 claims
- 4576US8618555B2Silicon carbide semiconductor device and method of manufacturing the sameSUZUKI NAOHIRO·Filed 2011·Granted Dec 31, 2013·5 cites·11 claims
- 4676US8470672B2Method of manufacturing silicon carbide semiconductor deviceENDO TAKESHI·Filed 2011·Granted Jun 25, 2013·4 cites·8 claims
- 4775US10516870B2Information processing device, information processing method, and programSONY CORP·Filed 2019·Granted Dec 24, 2019·1 cites·13 claims
- 4875US8949934B2Communication device, communication method, and programWANG QIHONG·Filed 2012·Granted Feb 3, 2015·4 cites·5 claims
- 4975US5655827ASurface light source deviceENPLAS CORP·Filed 1995·Granted Aug 12, 1997·38 cites·11 claims
- 5074US5330112ACrushing apparatusMITSUI MINING CO LTD·Filed 1993·Granted Jul 19, 1994·31 cites·10 claims
Showing the top 50 of 169 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →