Inventor · disambiguated record
Hiroyuki Doi
Also filed as: DOI HIROYUKI
65 granted patents·27 pending applications·572 citations·filing 1982–2023
99Inventor score
Files withHITACHI LTD33MITSUBISHI HITACHI POWER SYS8MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7IMANO SHINYA6PANASONIC CORP5
Top patents by PatentIndex Score
92 records- 0194US8685316B2Ni-based heat resistant alloy, gas turbine component and gas turbineSATO JUN·Filed 2011·Granted Apr 1, 2014·6 cites·6 claims
- 0290US9315372B2Grease pump unitDOI HIROYUKI·Filed 2012·Granted Apr 19, 2016·14 cites·5 claims
- 0390US8864919B2Nickel based forged alloy, gas turbine member using said alloy and gas turbine using said memberHITACHI LTD·Filed 2012·Granted Oct 21, 2014·4 cites·10 claims
- 0489US9197830B2Solid-state imaging device and driving method of solid-state imaging devicePANASONIC CORP·Filed 2014·Granted Nov 24, 2015·9 cites·12 claims
- 0589US7165325B2Welding material, gas turbine blade or nozzle and a method of repairing a gas turbine blade or nozzleHITACHI LTD·Filed 2003·Granted Jan 23, 2007·20 cites·4 claims
- 0687US5370497AGas turbine and gas turbine nozzleHITACHI LTD·Filed 1992·Granted Dec 6, 1994·40 cites·23 claims
- 0786US9062362B2Precipitate hardening stainless steel and long blade using same for steam turbineOIKAWA SHINJI·Filed 2012·Granted Jun 23, 2015·4 cites·18 claims
- 0886US8043068B2Ni-Fe based super alloy, process of producing the same and gas turbineHITACHI LTD·Filed 2005·Granted Oct 25, 2011·5 cites·6 claims
- 0986US5480283AGas turbine and gas turbine nozzleHITACHI LTD·Filed 1994·Granted Jan 2, 1996·37 cites·29 claims
- 1085US6368907B1Method of fabricating semiconductor deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Apr 9, 2002·30 cites·8 claims
- 1185US6169307B1Nonvolatile semiconductor memory device comprising a memory transistor, a select transistor, and an intermediate diffusion layerMATSUSHITA ELECTRONICS CORP·Filed 1998·Granted Jan 2, 2001·51 cites·19 claims
- 1284US8801373B2High-reliability turbine metal sealing materialKOJIMA YOSHITAKA·Filed 2010·Granted Aug 12, 2014·4 cites·4 claims
- 1384US7169241B2Ni-based superalloy having high oxidation resistance and gas turbine partHITACHI LTD·Filed 2004·Granted Jan 30, 2007·14 cites·8 claims
- 1483US8747733B2Precipitation hardenable martensitic stainless steel and steam turbine blade using the sameOIKAWA SHINJI·Filed 2011·Granted Jun 10, 2014·3 cites·4 claims
- 1583US6493936B2Method of making steam turbine bladeHITACHI LTD·Filed 2001·Granted Dec 17, 2002·13 cites·16 claims
- 1682US8524149B2Nickel base wrought alloySATO JUN·Filed 2010·Granted Sep 3, 2013·2 cites·10 claims
- 1782US5964091AGas turbine combustor and gas turbineHITACHI LTD·Filed 1996·Granted Oct 12, 1999·42 cites·13 claims
- 1881US6818077B2High-strength Ni-base superalloy and gas turbine bladesHITACHI LTD·Filed 2003·Granted Nov 16, 2004·14 cites·17 claims
- 1980US9263482B2Solid-state image pickup devicePANASONIC CORP·Filed 2013·Granted Feb 16, 2016·2 cites·18 claims
- 2079US8512488B2Ni—Fe based forging superalloy excellent in high-temperature strength and high-temperature ductility, method of manufacturing the same, and steam turbine rotorIMANO SHINYA·Filed 2007·Granted Aug 20, 2013·3 cites·6 claims
- 2178US9873930B2Precipitation hardening martensitic stainless steel and steam turbine component made thereofOIKAWA SHINJI·Filed 2011·Granted Jan 23, 2018·2 cites·7 claims
- 2278US8128351B2Seals in steam turbineNARITA KENJIRO·Filed 2008·Granted Mar 6, 2012·14 cites·4 claims
- 2378US4505232ABoiler tubeHITACHI LTD·Filed 1984·Granted Mar 19, 1985·31 cites·10 claims
- 2477US6419453B2Steam turbine rotor shaftHITACHI LTD·Filed 2001·Granted Jul 16, 2002·11 cites·5 claims
- 2576US6784520B2Semiconductor devices constitute constant voltage devices used to raise internal voltageMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Aug 31, 2004·18 cites·24 claims
- 2674US8883072B2Ni-base alloy, high-temperature member for steam turbine and welded rotor for turbine using the same, and method for manufacturing the sameSATO JUN·Filed 2009·Granted Nov 11, 2014·3 cites·13 claims
- 2773US9541281B2High-temperature piping product and method for producing sameHITACHI LTD·Filed 2013·Granted Jan 10, 2017·3 cites·8 claims
- 2872US8500397B2Seals in steam turbineNARITA KENJIRO·Filed 2012·Granted Aug 6, 2013·2 cites·4 claims
- 2972US7576014B2Semiconductor device and manufacturing method thereofPANASONIC CORP·Filed 2005·Granted Aug 18, 2009·3 cites·11 claims
- 3072US7547188B2Ni-based alloy member, method of producing the alloy member, turbine engine part, welding material, and method of producing the welding materialHITACHI LTD·Filed 2006·Granted Jun 16, 2009·6 cites·13 claims
- 3171US11046772B2Process of production with controlled copper ionsCHUGAI PHARMACEUTICAL CO LTD·Filed 2016·Granted Jun 29, 2021·1 cites·8 claims
- 3271US7910966B2Solid state imaging device including a semiconductor substrate on which a plurality of pixel cells have been formedPANASONIC CORP·Filed 2009·Granted Mar 22, 2011·2 cites·6 claims
- 3371US7632066B2Pipe 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
- 3469US6657893B2Nonvolatile semiconductor memory device and method for driving the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Dec 2, 2003·14 cites·22 claims
- 3568US9567656B2Nickel based alloy for forgingMITSUBISHI HITACHI POWER SYS·Filed 2014·Granted Feb 14, 2017·0 cites·2 claims
- 3665US8956471B2Nickel based alloy for forgingIMANO SHINYA·Filed 2008·Granted Feb 17, 2015·0 cites·12 claims
- 3764US2014169973A1Ni-Based Heat Resistant Alloy, Gas Turbine Component and Gas TurbineHITACHI LTD·Filed 2014·Application pending·0 cites
- 3863US8723239B2Solid-state imaging elementDOI HIROYUKI·Filed 2008·Granted May 13, 2014·1 cites·17 claims
- 3961US8225672B2Method for assessing remaining lifespan of bolt used at high temperaturesARAI MASAHIKO·Filed 2010·Granted Jul 24, 2012·2 cites·5 claims
- 4061US6377490B1Nonvolatile semiconductor memory device and method for driving the sameMATSUSHITA ELECTRONICS CORP·Filed 2000·Granted Apr 23, 2002·10 cites·9 claims
- 4160US2009068052A1Heat resisting steel, gas turbine using the steel, and components thereofHITACHI LTD·Filed 2008·Application pending·0 cites
- 4259US2016130954A1Welding material and welding rotorMITSUBISHI HITACHI POWER SYS·Filed 2016·Application pending·0 cites
- 4359US2021269536A1Process of production with controlled copper ionsCHUGAI PHARMACEUTICAL CO LTD·Filed 2021·Application pending·0 cites
- 4458US8813361B2Gas turbine blade and manufacturing method thereofIMANO SHINYA·Filed 2011·Granted Aug 26, 2014·1 cites·10 claims
- 4558US7459035B2Steam turbine rotor and steam turbine plantHITACHI LTD·Filed 2004·Granted Dec 2, 2008·2 cites·4 claims
- 4657US12317533B2Semiconductor device for power amplificationNUVOTON TECHNOLOGY CORP JAPAN·Filed 2023·Granted May 27, 2025·0 cites·18 claims
- 4757US9200524B2Steam turbine rotorMITSUBISHI HITACHI POWER SYS·Filed 2013·Granted Dec 1, 2015·1 cites·7 claims
- 4857US2014064939A1High-reliablity turbine metal sealing materialKOJIMA YOSHITAKA·Filed 2013·Application pending·0 cites
- 4957US2007163682A1Ni-based superalloy having high oxidation resistance and gas turbine partHITACHI LTD·Filed 2006·Application pending·0 cites
- 5056US6773992B2Method for fabricating nonvolatile-semiconductor memory deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 10, 2004·6 cites·14 claims
Showing the top 50 of 92 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →