Inventor · disambiguated record
Katsumasa Yoshii
Also filed as: YOSHII KATSUMASA
30 granted patents·11 pending applications·291 citations·filing 1996–2025
96Inventor score
Files withALPS ELECTRIC CO LTD28SAMSUNG DISPLAY CO LTD8ALPS ALPINE CO LTD2AHN YI-JOON1ALPS ELECTRONIC CO LTD1
Top patents by PatentIndex Score
41 records- 0195US6750930B2Reflector providing particularly high reflectance in an intended viewing angle and reflection type liquid crystal display device using the sameALPS ELECTRIC CO LTD·Filed 2001·Granted Jun 15, 2004·53 cites·16 claims
- 0290US11741739B2Fingerprint sensor and display device including the sameSAMSUNG DISPLAY CO LTD·Filed 2019·Granted Aug 29, 2023·3 cites·29 claims
- 0389US9640782B2Organic light-emitting display apparatus and method of manufacturing the sameSAMSUNG DISPLAY CO LTD·Filed 2016·Granted May 2, 2017·4 cites·4 claims
- 0489US6606139B2Liquid crystal display device with improved viewing angle property and portable electronic apparatus using the sameALPS ELECTRIC CO LTD·Filed 2002·Granted Aug 12, 2003·35 cites·29 claims
- 0588US6947107B2Reflector which appears bright when viewed at specific angle and reflective liquid crystal displayALPS ELECTRIC CO LTD·Filed 2002·Granted Sep 20, 2005·55 cites·71 claims
- 0687US9356079B2Organic light-emitting display apparatus and method of manufacturing the sameSAMSUNG DISPLAY CO LTD·Filed 2014·Granted May 31, 2016·6 cites·13 claims
- 0786US10817696B2Fingerprint sensor package and display device including the sameSAMSUNG DISPLAY CO LTD·Filed 2018·Granted Oct 27, 2020·4 cites·19 claims
- 0882US10509944B2Method and device for recognizing fingerprintSAMSUNG DISPLAY CO LTD·Filed 2018·Granted Dec 17, 2019·4 cites·20 claims
- 0978US2025393380A1Display device and method for manufacturing display deviceALPS ALPINE CO LTD·Filed 2025·Application pending·0 cites
- 1077US9232571B2Flexible display deviceAHN YI-JOON·Filed 2012·Granted Jan 5, 2016·5 cites·16 claims
- 1177US5705096AUV crosslinking compound, alignment film for LCD component and LCD componentALPS ELECTRIC CO LTD·Filed 1996·Granted Jan 6, 1998·50 cites·3 claims
- 1276US9484554B2Organic light-emitting display apparatusSAMSUNG DISPLAY CO LTD·Filed 2015·Granted Nov 1, 2016·2 cites·20 claims
- 1372US7542113B2Reflector used in LCD devices having a plurality of convace portions each inner surface thereof having first and second flat surfaces perpendicular to respective first and second directionsALPS ELECTRIC CO LTD·Filed 2005·Granted Jun 2, 2009·5 cites·19 claims
- 1472US6963381B2Active matrix display device with asymmetrical reflection, and insulating layer with a corrugated surface and a flat portionALPS ELECTRONIC CO LTD·Filed 2003·Granted Nov 8, 2005·13 cites·11 claims
- 1570US6734934B2External reflective type liquid crystal display having substrate with light scattering surface and reflector with irregular surfaceALPS ELECTRIC CO LTD·Filed 2003·Granted May 11, 2004·10 cites·5 claims
- 1666US6686982B1Reflection type liquid crystal display device in which oblique moiré fringe is not easily viewed and which is superior in display qualityALPS ELECTRIC CO LTD·Filed 2000·Granted Feb 3, 2004·10 cites·10 claims
- 1765US7123324B2Reflector providing particularly high reflectance in an intended viewing angle and reflection type liquid crystal display device using the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Oct 17, 2006·6 cites·12 claims
- 1865US2025174607A1Transmission type displayALPS ALPINE CO LTD·Filed 2024·Application pending·0 cites
- 1963US6829094B2Reflector which exhibits good reflectance over wide angle range and liquid crystal display using the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Dec 7, 2004·6 cites·13 claims
- 2059US7321407B2Reflector and liquid crystal displayALPS ELECTRIC CO LTD·Filed 2003·Granted Jan 22, 2008·6 cites·46 claims
- 2156US6864934B2LCD with irregular reflection surface reflector and light scattering elementALPS ELECTRIC CO LTD·Filed 2004·Granted Mar 8, 2005·4 cites·3 claims
- 2255US10977468B2Optical unit for a fingerprint sensor and display device including the sameSAMSUNG DISPLAY CO LTD·Filed 2019·Granted Apr 13, 2021·0 cites·17 claims
- 2352US6863410B2Reflector which exhibits good reflectance over wide angle range and liquid crystal display using the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Mar 8, 2005·2 cites·5 claims
- 2452US6695454B2Reflector which exhibits good reflectance over wide angle range and liquid crystal display using the sameALPS ELECTRIC CO LTD·Filed 2002·Granted Feb 24, 2004·2 cites·9 claims
- 2550US7471356B2Reflector providing particularly high reflectance in an intended viewing angle and reflection type liquid crystal display device using the sameALPS ELECTRIC CO LTD·Filed 2004·Granted Dec 30, 2008·1 cites·6 claims
- 2649US6912028B2Liquid crystal display device with improved viewing angle properly and portable electronic apparatus using the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Jun 28, 2005·2 cites·25 claims
- 2747US10278652B2Display apparatusSAMSUNG DISPLAY CO LTD·Filed 2016·Granted May 7, 2019·0 cites·21 claims
- 2845US7388634B2Reflector comprising a plurality of concave portions and liquid crystal display device including the sameALPS ELECTRIC CO LTD·Filed 2004·Granted Jun 17, 2008·1 cites·14 claims
- 2944US7515226B2Reflector providing particularly high reflectance in an intended viewing angle and reflection type liquid crystal display device using the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Apr 7, 2009·0 cites·10 claims
- 3044US7312842B2Reflector and liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2005·Granted Dec 25, 2007·0 cites·14 claims
- 3144US6966662B2Reflector and liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2004·Granted Nov 22, 2005·2 cites·10 claims
- 3242US2005083456A1Reflector and liquid crystal display device using the sameALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 3341US2005231663A1Reflector and liquid crystal display device using the sameALPS ELECTRIC CO LTD·Filed 2005·Application pending·0 cites
- 3440US7245339B2Transflective film and liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2004·Granted Jul 17, 2007·0 cites·17 claims
- 3540US2005157228A1Reflector and liquid-crystal displayALPS ELECTRIC CO LTD·Filed 2005·Application pending·0 cites
- 3639US2005099561A1Transflective film and liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 3739US2005012880A1Transflective liquid crystal display panel, transflective liquid crystal display device, and manufacturing method of transflecftive liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 3839US2005073634A1Color liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 3938US2004012726A1Active matrix display deviceALPS ELECTRIC CO LTD·Filed 2003·Application pending·0 cites
- 4037US2004036825A1Reflector and reflective liquid crystal display device provided with the reflectorALPS ELECTRIC CO LTD·Filed 2003·Application pending·0 cites
- 4137US2008094538A1Reflecting plate and liquid crystal display apparatusYOSHII KATSUMASA·Filed 2007·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →