Inventor · disambiguated record
Masahiko Iijima
Also filed as: IIJIMA MASAHIKO
39 granted patents·21 pending applications·207 citations·filing 1991–2024
96Inventor score
Files withHITACHI HIGH TECH CORP34TOYOTA MOTOR CO LTD13IIJIMA MASAHIKO3TONEN CORP2YAMAMOTO DENKI KK2
Top patents by PatentIndex Score
60 records- 0189US6576584B1Method for producing hydrotreating catalystTONEN CORP·Filed 2000·Granted Jun 10, 2003·42 cites·18 claims
- 0289US2024272186A1Automatic analyzerHITACHI HIGH TECH CORP·Filed 2024·Application pending·0 cites
- 0388US12253536B2Automatic analysis device and automatic analysis methodHITACHI HIGH TECH CORP·Filed 2024·Granted Mar 18, 2025·0 cites·17 claims
- 0485US6436870B1Hydrotreating catalyst for hydrotreating hydrocarbon oilsTONEN CORP·Filed 2000·Granted Aug 20, 2002·26 cites·11 claims
- 0584US11971425B2Automatic analysis device and automatic analysis methodHITACHI HIGH TECH CORP·Filed 2023·Granted Apr 30, 2024·0 cites·15 claims
- 0683US10416179B2Automatic analyzerHITACHI HIGH TECH CORP·Filed 2017·Granted Sep 17, 2019·1 cites·14 claims
- 0782US9400247B2Automatic analyzerHITACHI HIGH TECH CORP·Filed 2013·Granted Jul 26, 2016·4 cites·5 claims
- 0881US11156625B2Automatic analysis deviceHITACHI HIGH TECH CORP·Filed 2018·Granted Oct 26, 2021·1 cites·15 claims
- 0981US2023408537A1Automatic analysis deviceHITACHI HIGH TECH CORP·Filed 2023·Application pending·0 cites
- 1080US9696329B2Automatic analyzerHITACHI HIGH TECH CORP·Filed 2013·Granted Jul 4, 2017·2 cites·12 claims
- 1179US12000849B2Automatic analyzerHITACHI HIGH TECH CORP·Filed 2021·Granted Jun 4, 2024·0 cites·7 claims
- 1278US6267874B1Hydrotreating catalyst and processes for hydrotreating hydrocarbon oil with the sameTONENGENERAL SEKIYU K K·Filed 1998·Granted Jul 31, 2001·46 cites·22 claims
- 1375US11747355B2Automatic analysis deviceHITACHI HIGH TECH CORP·Filed 2021·Granted Sep 5, 2023·0 cites·14 claims
- 1475US11674970B2Automatic analysis device and automatic analysis methodHITACHI HIGH TECH CORP·Filed 2021·Granted Jun 13, 2023·0 cites·15 claims
- 1574US11209448B2Automatic analyzerHITACHI HIGH TECH CORP·Filed 2019·Granted Dec 28, 2021·0 cites·6 claims
- 1670US9506942B2Automatic analyzer and method for detecting measurement value abnormalitiesHITACHI HIGH TECH CORP·Filed 2012·Granted Nov 29, 2016·3 cites·13 claims
- 1769USD997383SSample cupHITACHI HIGH TECH CORP·Filed 2021·Granted Aug 29, 2023·4 cites·1 claims
- 1868US12146890B2Automated analyzer and automated analysis methodHITACHI HIGH TECH CORP·Filed 2021·Granted Nov 19, 2024·0 cites·10 claims
- 1968US9638640B2Automatic analyzerHITACHI HIGH TECH CORP·Filed 2013·Granted May 2, 2017·1 cites·7 claims
- 2066US10976333B2Automatic analysis device and automatic analysis methodHITACHI HIGH TECH CORP·Filed 2017·Granted Apr 13, 2021·0 cites·16 claims
- 2166US6702878B2Hydrogen-permeable membrane, manufacturing method of the same, and hydrogen gas separator using the sameTOYOTA MOTOR CO LTD·Filed 2002·Granted Mar 9, 2004·11 cites·17 claims
- 2264US5493187AMethod and apparatus for controlling brushless motorYAMAMOTO DENKI KK·Filed 1993·Granted Feb 20, 1996·24 cites·6 claims
- 2362US11187712B2Automated analyzer and automated analysis methodHITACHI HIGH TECH CORP·Filed 2018·Granted Nov 30, 2021·0 cites·12 claims
- 2461US7833675B2Proton conductor, and fuel cell and fuel cell system including proton conductorTOYOTA MOTOR CO LTD·Filed 2009·Granted Nov 16, 2010·0 cites·6 claims
- 2559USD849264SClinical analyzerHITACHI HIGH TECH CORP·Filed 2017·Granted May 21, 2019·7 cites·1 claims
- 2658USD1000634SAdaptor for sample rackHITACHI HIGH TECH CORP·Filed 2021·Granted Oct 3, 2023·2 cites·1 claims
- 2758US2024345110A1Automatic AnalyzerHITACHI HIGH TECH CORP·Filed 2022·Application pending·0 cites
- 2858US2024192238A1Sample container and automatic analyzerHITACHI HIGH TECH CORP·Filed 2022·Application pending·0 cites
- 2955US7491462B2Electrolyte membrane for fuel cell operable in medium temperature range, fuel cell using the same, and manufacturing methods thereforTOYOTA MOTOR CO LTD·Filed 2003·Granted Feb 17, 2009·2 cites·14 claims
- 3055US2024319221A1Automatic analysis device and method for controlling sameHITACHI HIGH TECH CORP·Filed 2021·Application pending·0 cites
- 3155US2023375580A1Automatic Analyzer, Recommended Action Notification System, and Recommended Action Notification MethodHITACHI HIGH TECH CORP·Filed 2021·Application pending·0 cites
- 3255US2023069039A1Automatic Analysis DeviceHITACHI HIGH TECH CORP·Filed 2021·Application pending·0 cites
- 3352US2010183938A1Fuel cellIIJIMA MASAHIKO·Filed 2008·Application pending·0 cites
- 3452US2009233151A1Proton conducting oxidic electrolyte for intermediate temperature fuel cellIIJIMA MASAHIKO·Filed 2007·Application pending·0 cites
- 3551US7049008B2Hydrogen-permeable membrane and manufacturing method of the sameTOYOTA MOTOR CO LTD·Filed 2003·Granted May 23, 2006·2 cites·11 claims
- 3650US9575082B2Automatic analysis device and automatic analysis methodHITACHI HIGH TECH CORP·Filed 2014·Granted Feb 21, 2017·0 cites·6 claims
- 3750US2023375581A1Data processing device and automatic analyzerHITACHI HIGH TECH CORP·Filed 2021·Application pending·0 cites
- 3849US2008138679A1Hydrogen Generation Device and Fuel Cell System Including SameTOYOTA MOTOR CO LTD·Filed 2006·Application pending·0 cites
- 3949US2007243450A1Fuel cellTOYOTA MOTOR CO LTD·Filed 2005·Application pending·0 cites
- 4048US7615297B2Fuel cellTOYOTA MOTOR CO LTD·Filed 2004·Granted Nov 10, 2009·0 cites·14 claims
- 4148US5097192AController of a synchronous motorYAMAMOTO DENKI KK·Filed 1991·Granted Mar 17, 1992·12 cites·6 claims
- 4248US2007243443A1Fuel CellTOYOTA MOTOR CO LTD·Filed 2005·Application pending·0 cites
- 4348US2007065688A1Fuel cell system and method of generating electricity therebyTOYOTA CHUO KENKYUSHO KK·Filed 2006·Application pending·0 cites
- 4447US7829235B2Fuel cell production method and fuel cellTOYOTA MOTOR CO LTD·Filed 2005·Granted Nov 9, 2010·0 cites·7 claims
- 4547US2006141320A1Fuel cell and method for manufacturing electrolyte membrane for fuel cellTOYOTA MOTOR CO LTD·Filed 2005·Application pending·0 cites
- 4646US5692009AJitter measuring method and apparatusLEADER ELECTRONICS·Filed 1994·Granted Nov 25, 1997·17 cites·17 claims
- 4746US2009155657A1Hydrogen Permeable Film, and Fuel Battery Using the SameMIZUNO OSAMU·Filed 2006·Application pending·0 cites
- 4845US11971426B2Automatic analysis deviceHITACHI HIGH TECH CORP·Filed 2019·Granted Apr 30, 2024·0 cites·11 claims
- 4945US8153332B2Fuel cell systemAOYAMA SATOSHI·Filed 2004·Granted Apr 10, 2012·0 cites·9 claims
- 5045US2004226218A1Fuel reforming apparatus and fuel cell systemTOYOTA MOTOR CO LTD·Filed 2003·Application pending·0 cites
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →