Inventor · disambiguated record
Masahiko Arai
Also filed as: ARAI MASAHIKO
20 granted patents·11 pending applications·134 citations·filing 1987–2016
93Inventor score
Top patents by PatentIndex Score
31 records- 0192US6575700B2Steam turbine blade, and steam turbine and steam turbine power plant using the sameHITACHI LTD·Filed 2002·Granted Jun 10, 2003·50 cites·26 claims
- 0286US9062362B2Precipitate hardening stainless steel and long blade using same for steam turbineOIKAWA SHINJI·Filed 2012·Granted Jun 23, 2015·4 cites·18 claims
- 0386US6398504B1Steam turbine blade, and steam turbine and steam turbine power plant using the sameHITACHI LTD·Filed 2000·Granted Jun 4, 2002·17 cites·19 claims
- 0483US8747733B2Precipitation hardenable martensitic stainless steel and steam turbine blade using the sameOIKAWA SHINJI·Filed 2011·Granted Jun 10, 2014·3 cites·4 claims
- 0578US9873930B2Precipitation hardening martensitic stainless steel and steam turbine component made thereofOIKAWA SHINJI·Filed 2011·Granted Jan 23, 2018·2 cites·7 claims
- 0677US6419453B2Steam turbine rotor shaftHITACHI LTD·Filed 2001·Granted Jul 16, 2002·11 cites·5 claims
- 0774US8485788B2Rotor for steam turbine and method of manufacturing the sameARIKAWA HIDEYUKI·Filed 2006·Granted Jul 16, 2013·3 cites·3 claims
- 0871US7632066B2Pipe for steam turbine, manufacturing process of same, main stream pipe and reheat pipe for steam turbine, and steam turbine power plant using those pipesHITACHI LTD·Filed 2006·Granted Dec 15, 2009·1 cites·12 claims
- 0961US8225672B2Method for assessing remaining lifespan of bolt used at high temperaturesARAI MASAHIKO·Filed 2010·Granted Jul 24, 2012·2 cites·5 claims
- 1061US6664479B2Flexible printed circuit boardFUJIKURA LTD·Filed 2001·Granted Dec 16, 2003·10 cites·15 claims
- 1160US2009068052A1Heat resisting steel, gas turbine using the steel, and components thereofHITACHI LTD·Filed 2008·Application pending·0 cites
- 1257US9200524B2Steam turbine rotorMITSUBISHI HITACHI POWER SYS·Filed 2013·Granted Dec 1, 2015·1 cites·7 claims
- 1357US4905191AMicrocomputer with built-in EPROM and test modeHITACHI LTD·Filed 1987·Granted Feb 27, 1990·18 cites·9 claims
- 1455US9784110B2Steam turbine rotorMITSUBISHI HITACHI POWER SYS·Filed 2014·Granted Oct 10, 2017·0 cites·5 claims
- 1554US2011126540A1High-strength heat resisting cast steel, method of producing the steel, and applications of the steelHITACHI LTD·Filed 2011·Application pending·0 cites
- 1651US2016108743A1Turbine Blade, and Turbine Rotor and Steam Turbine Using the Turbine BladeMITSUBISHI HITACHI POWER SYS·Filed 2015·Application pending·0 cites
- 1750US10378366B2Steam turbine rotor blade and method for manufacturing steam turbine rotor bladeMITSUBISHI HITACHI POWER SYS·Filed 2016·Granted Aug 13, 2019·0 cites·18 claims
- 1849US8025746B2Turbine casingHITACHI LTD·Filed 2007·Granted Sep 27, 2011·0 cites·15 claims
- 1949US2007071599A1High-strength heat resisting cast steel, method of producing the steel, and applications of the steelARAI MASAHIKO·Filed 2006·Application pending·0 cites
- 2049US2014379280A1Remaining Life Assessment Method for Heat-Resisting Steel MemberMITSUBISHI HITACHI POWER SYS·Filed 2014·Application pending·0 cites
- 2149US2005074356A1Heat resisting steel, gas turbine using the steel, and components thereofHITACHI LTD·Filed 2004·Application pending·0 cites
- 2247US2013101425A1Turbine Blade, and Turbine Rotor and Steam Turbine Using the Turbine BladeHITACHI LTD·Filed 2012·Application pending·0 cites
- 2346US5779822APrecipitation hardening type single crystal austenitic steelHITACHI LTD·Filed 1996·Granted Jul 14, 1998·7 cites·9 claims
- 2446US2012308772A1Steam turbine memberHARUYAMA HIROSHI·Filed 2011·Application pending·0 cites
- 2544US2014105753A1Precipitation Hardening Martensitic Stainless Steel and Long Blade for Steam Turbine Using the SameHITACHI LTD·Filed 2013·Application pending·0 cites
- 2643US9388702B2Precipitation hardening martensitic stainless steel, and steam turbine long blade, steam turbine, and power plant using the sameHITACHI LTD·Filed 2013·Granted Jul 12, 2016·0 cites·11 claims
- 2743US7540711B2Heat resisting steel, steam turbine rotor shaft using the steel, steam turbine, and steam turbine power plantHITACHI LTD·Filed 2005·Granted Jun 2, 2009·2 cites·19 claims
- 2839US2010028155A1Turbine RotorHITACHI LTD·Filed 2009·Application pending·0 cites
- 2936US5987088APrecipitation hardening type single crystal austenitic steel, and usage the sameHITACHI LTD·Filed 1998·Granted Nov 16, 1999·3 cites·12 claims
- 3035US2010122754A1High-strength martensite heat resisting cast steel, method of producing the steel, and applications of the steelKAWANAKA HIROTSUGU·Filed 2006·Application pending·0 cites
- 3133US8596982B2Turbine rotorNISHIOKA EIJI·Filed 2010·Granted Dec 3, 2013·0 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →