Inventor · disambiguated record
Akira Gunji
Also filed as: GUNJI AKIRA
23 granted patents·15 pending applications·13 citations·filing 2006–2022
91Inventor score
Top patents by PatentIndex Score
38 records- 0190US10256466B2Positive-electrode material for lithium ion secondary battery, method and producing the same, and lithium ion secondary batteryHITACHI METALS LTD·Filed 2016·Granted Apr 9, 2019·3 cites·11 claims
- 0288US10461328B2Cathode active material used for lithium ion secondary battery and lithium ion secondary battery using sameHITACHI METALS LTD·Filed 2017·Granted Oct 29, 2019·2 cites·8 claims
- 0382US11646412B2Cathode active material used for lithium ion secondary battery and lithium ion secondary batteryHITACHI METALS LTD·Filed 2018·Granted May 9, 2023·1 cites·14 claims
- 0478US8828584B2Lithium-ion rechargeable battery module, vehicle with the battery module and generating system with the battery moduleGUNJI AKIRA·Filed 2012·Granted Sep 9, 2014·3 cites·13 claims
- 0574US11581534B2Positive-electrode material for lithium ion secondary battery, method for producing the same, and lithium ion secondary batteryHITACHI METALS LTD·Filed 2020·Granted Feb 14, 2023·0 cites·3 claims
- 0674US10749175B2Positive-electrode material for lithium ion secondary battery, method for producing the same, and lithium ion secondary batteryHITACHI METALS LTD·Filed 2019·Granted Aug 18, 2020·0 cites·3 claims
- 0773US10193150B2Lithium ion secondary battery cathode material, lithium ion secondary battery cathode and lithium ion secondary battery that use same, and method for manufacturing lithium ion secondary battery cathode materialHITACHI METALS LTD·Filed 2015·Granted Jan 29, 2019·1 cites·7 claims
- 0872US11764356B2Method for producing positive electrode active material for lithium ion secondary batteriesPROTERIAL LTD·Filed 2021·Granted Sep 19, 2023·0 cites·8 claims
- 0968US8206867B2Fuel cellTOKOI HIROMI·Filed 2007·Granted Jun 26, 2012·2 cites·10 claims
- 1068US7927751B2Fuel cell power systemHITACHI LTD·Filed 2006·Granted Apr 19, 2011·1 cites·10 claims
- 1164US11949100B2Cathode active material used for lithium ion secondary battery and lithium ion secondary batteryPROTERIAL LTD·Filed 2019·Granted Apr 2, 2024·0 cites·18 claims
- 1263US2024300825A1Method for manufacturing positive electrode active material for lithium ion secondary batteryPROTERIAL LTD·Filed 2022·Application pending·0 cites
- 1362US2022166019A1Positive electrode active material for lithium-ion secondary batteries, method for producing same, and lithium-ion secondary batteryHITACHI METALS LTD·Filed 2022·Application pending·0 cites
- 1460US8377600B2Fuel cell power generation system and method of operating thereofHITACHI LTD·Filed 2012·Granted Feb 19, 2013·0 cites·9 claims
- 1558US8114546B2Fuel cell power generation system and method of operating thereofTAKAHASHI SHIN·Filed 2007·Granted Feb 14, 2012·0 cites·6 claims
- 1657US2022115656A1Positive electrode active material for lithium ion secondary battery, method for manufacturing same, and lithium ion secondary batteryHITACHI METALS LTD·Filed 2020·Application pending·0 cites
- 1757US2019207215A1Method for producing positive electrode active material for lithium ion secondary batteries, positive electrode active material for lithium ion secondary batteries, and lithium ion secondary batteryHITACHI METALS LTD·Filed 2017·Application pending·0 cites
- 1855US10749176B2Cathode active material used for lithium ion secondary battery, method for producing same, and lithium ion secondary batteryHITACHI METALS LTD·Filed 2016·Granted Aug 18, 2020·0 cites·8 claims
- 1951US11688847B2Method and firing apparatus for manufacturing cathode active material for lithium ion secondary batteryPROTERIAL LTD·Filed 2018·Granted Jun 27, 2023·0 cites·7 claims
- 2051US11677075B2Cathode active material for lithium ion secondary battery, method for manufacturing cathode active material for lithium ion secondary battery, and lithium ion secondaryPROTERIAL LTD·Filed 2018·Granted Jun 13, 2023·0 cites·13 claims
- 2151US7972742B2Tube type fuel cell to decrease current path lengthHITACHI LTD·Filed 2006·Granted Jul 5, 2011·0 cites·10 claims
- 2250US2008248342A1Solid oxide fuel cell power generation apparatus and power generation method thereofHITACHI LTD·Filed 2008·Application pending·0 cites
- 2350US2014356717A1Lithium Ion Secondary Battery Positive Electrode, Lithium Ion Secondary Battery, Vehicle Mounting the Same, and Electric Power Storage SystemHITACHI LTD·Filed 2012·Application pending·0 cites
- 2449US2015030925A1Positive electrode materialHITACHI LTD·Filed 2013·Application pending·0 cites
- 2549US2016254542A1Cathode Active Material for Lithium Ion Secondary Batteries, and Lithium Ion Secondary BatteryHITACHI LTD·Filed 2013·Application pending·0 cites
- 2649US2008085432A1Solid oxide fuel cell module and control method thereofNOIE AKIHIKO·Filed 2007·Application pending·0 cites
- 2747US9023522B2Cathode for lithium-ion secondary battery, lithium-ion secondary battery, vehicle and power storage system equipped with the batteryGUNJI AKIRA·Filed 2011·Granted May 5, 2015·0 cites·8 claims
- 2847US8445154B2Header for supplying gas in fuel cell and fuel cell power systemYOSHIDA TADASHI·Filed 2007·Granted May 21, 2013·0 cites·16 claims
- 2947US2008063907A1Modules of solid oxide fuel cell and their operation methodsTAKAHASHI SHIN·Filed 2007·Application pending·0 cites
- 3046US10727484B2Cathode active substance used for lithium ion secondary battery, cathode including same, and lithium ion secondary battery provided with cathodeHITACHI METALS LTD·Filed 2017·Granted Jul 28, 2020·0 cites·4 claims
- 3146US8173317B2Fuel cells power generation systemGUNJI AKIRA·Filed 2007·Granted May 8, 2012·0 cites·9 claims
- 3246US2008160364A1Solid oxide fuel cell moduleTOKOI HIROMI·Filed 2007·Application pending·0 cites
- 3345US10388944B2Positive electrode active material for lithium ion secondary battery, and positive electrode for lithium ion secondary battery and lithium ion secondary battery comprising the sameHITACHI METALS LTD·Filed 2015·Granted Aug 20, 2019·0 cites·12 claims
- 3445US2015102256A1Cathode active material for lithium-ion secondary batteryKONISHI HIROAKI·Filed 2012·Application pending·0 cites
- 3543US11011751B2Positive electrode active material for lithium ion secondary battery, manufacturing method thereof, and lithium ion secondary batteryHITACHI METALS LTD·Filed 2015·Granted May 18, 2021·0 cites·9 claims
- 3641US2018316004A1Method for producing cathode active material used for lithium secondary batteryHITACHI METALS LTD·Filed 2017·Application pending·0 cites
- 3738US2016156020A1Method for manufacturing cathode electrode materialsHITACHI METALS LTD·Filed 2015·Application pending·0 cites
- 3835US2016276664A1Positive electrode active material for lithium ion secondary batteries, method for producing same and lithium ion secondary batteryHITACHI METALS LTD·Filed 2015·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Akira Gunji files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →