Inventor · disambiguated record
Yoshihiro Kumagai
Also filed as: KUMAGAI YOSHIHIRO
20 granted patents·16 pending applications·559 citations·filing 1989–2024
95Inventor score
Files withKURARAY CO8YOKOGAWA ELECTRIC CORP5ENEOS CORP4SONY SEMICONDUCTOR SOLUTIONS CORP4ANDO ELECTRIC2
Top patents by PatentIndex Score
36 records- 0197US6750941B2Complex diffraction deviceNIPPON MITSUBISHI OIL CORP·Filed 2002·Granted Jun 15, 2004·181 cites·8 claims
- 0294US6327089B1Laminated transparent structure for reflective displayCENTRAL GLASS CO LTD·Filed 1999·Granted Dec 4, 2001·131 cites·16 claims
- 0391US6292295B1Rear projection screen incorporating a prismKURARAY CO·Filed 1998·Granted Sep 18, 2001·39 cites·12 claims
- 0490US6628369B2Circular polarizer and liquid crystal displayNIPPON OIL CORP·Filed 2002·Granted Sep 30, 2003·44 cites·6 claims
- 0586US6282034B1Optical device and Fresnel lens sheetKURARAY CO·Filed 1999·Granted Aug 28, 2001·26 cites·14 claims
- 0684US11402296B2Optical fiber characteristics measurement apparatus and optical fiber characteristics measurement methodYOKOGAWA ELECTRIC CORP·Filed 2019·Granted Aug 2, 2022·2 cites·20 claims
- 0782US5724188ALenticular lens sheetKURARAY CO·Filed 1996·Granted Mar 3, 1998·20 cites·3 claims
- 0879US9221214B2Method for producing concave-convex substrate using sol-gel method, sol used in same, method for producing organic EL element using same, and organic EL element obtained therebyJX NIPPON OIL & ENERGY CORP·Filed 2014·Granted Dec 29, 2015·3 cites·16 claims
- 0978US4909777ATensioner or toothed beltsTSUBAKIMOTO CHAIN CO·Filed 1989·Granted Mar 20, 1990·26 cites·6 claims
- 1075US6210872B1Optical filmNIPPON MITSUBISHI OIL CORP·Filed 1998·Granted Apr 3, 2001·29 cites·5 claims
- 1169US5432636ARear-projection screenKURARAY CO·Filed 1994·Granted Jul 11, 1995·13 cites·5 claims
- 1264US7061676B2Rear projection screen and rear projection display apparatusKURARAY CO·Filed 2004·Granted Jun 13, 2006·6 cites·11 claims
- 1364US2023265238A1Liquid crystal polyester resin, molded article, and electrical/electronic componentENEOS CORP·Filed 2021·Application pending·0 cites
- 1464US2023287172A1Liquid crystal polyester resin, molded article, and electrical/electronic componentENEOS CORP·Filed 2021·Application pending·0 cites
- 1564US2023257519A1Liquid crystal polyester resin, molded article, and electrical/electronic componentENEOS CORP·Filed 2021·Application pending·0 cites
- 1662US7019804B2Liquid crystal cell with twist angle from 180 to 270 degrees and twisted optical compensating elementNIPPON OIL CORP·Filed 2002·Granted Mar 28, 2006·8 cites·2 claims
- 1761US2024337560A1Measuring device, measuring method, and computer-readable recording mediumYOKOGAWA ELECTRIC CORP·Filed 2024·Application pending·0 cites
- 1860US2024011848A1Temperature measuring device and temperature measuring methodYOKOGAWA ELECTRIC CORP·Filed 2023·Application pending·0 cites
- 1959US12339144B2Optical fiber characteristic measurement device, optical fiber characteristic measurement program, and optical fiber characteristic measurement method for measuring characteristics of optical fiber based on Brillouin gain spectrumYOKOGAWA ELECTRIC CORP·Filed 2021·Granted Jun 24, 2025·0 cites·18 claims
- 2058US8724101B2Optical fiber characteristic measuring device and methodHOTATE KAZUO·Filed 2009·Granted May 13, 2014·4 cites·9 claims
- 2157US2023031203A1Optical fiber characteristics measurement systemYOKOGAWA ELECTRIC CORP·Filed 2022·Application pending·0 cites
- 2253US2025199789A1Information processing apparatus and information processing systemSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2023·Application pending·0 cites
- 2352US2023106477A1Composite, slurry composition, film, and metal-clad laminateENEOS CORP·Filed 2021·Application pending·0 cites
- 2450US2023368049A1Information processing system and information processing methodSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2021·Application pending·0 cites
- 2549US9109977B2Optical fiber characteristics measurement device and methodKISHI MASATO·Filed 2012·Granted Aug 18, 2015·1 cites·5 claims
- 2647US7136224B2Rear projection screen with shifted lensKURARAY CO·Filed 2003·Granted Nov 14, 2006·1 cites·7 claims
- 2745US2020407881A1Apparatus For Producing Ultrafine FibersJXTG NIPPON OIL & ENERGY CORP·Filed 2018·Application pending·0 cites
- 2845US2023290137A1Information processing apparatus, information processing method, and programSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2021·Application pending·0 cites
- 2944US6108465AOptical pulse generatorANDO ELECTRIC·Filed 1998·Granted Aug 22, 2000·13 cites·9 claims
- 3044US2014357012A1Manufacturing method and manufacturing device for optical substrate having concavo-convex pattern using film-shaped mold, and manufacturing method for device provided with optical substrateJX NIPPON OIL & ENERGY CORP·Filed 2014·Application pending·0 cites
- 3143US6101021AOptical pulse generatorANDO ELECTRIC·Filed 1999·Granted Aug 8, 2000·10 cites·18 claims
- 3242US2020216981A1Apparatus For Manufacturing Ultrafine Fiber And Method For Manufacturing Ultrafine FiberJXTG NIPPON OIL & ENERGY CORP·Filed 2018·Application pending·0 cites
- 3339US2008013171A1Fresnel Lens Sheet, Rear Projection Type Screen and Rear Projection Type Image Display UnitKURARAY CO·Filed 2005·Application pending·0 cites
- 3439US2009002818A1Rear Surface Projection Type Screen and Rear Surface Projection Type Display DeviceKURARAY CO·Filed 2006·Application pending·0 cites
- 3538US2023370570A1Data transmission device, data transmission method, information processing device, information processing method, and programSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2021·Application pending·0 cites
- 3635US5432249ALiquid crystalline polyestersNIPPON OIL CO LTD·Filed 1994·Granted Jul 11, 1995·2 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →