Inventor · disambiguated record
Manabu Kubota
Also filed as: KUBOTA MANABU
62 granted patents·18 pending applications·155 citations·filing 1998–2021
98Inventor score
Files withNIPPON STEEL CORP22NIPPON STEEL & SUMITOMO METAL CORP21KUBOTA MANABU7FUJITSU LTD4NIPPON TELEGRAPH & TELEPHONE4
Top patents by PatentIndex Score
80 records- 0193US11761053B2Method for producing railway wheel and railway wheelNIPPON STEEL CORP·Filed 2018·Granted Sep 19, 2023·3 cites·2 claims
- 0289US10392707B2Steel for carburizing, carburized steel component, and method of producing the sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2017·Granted Aug 27, 2019·1 cites·14 claims
- 0389US8475605B2Surface layer-hardened steel part and method of manufacturing the sameKUBOTA MANABU·Filed 2011·Granted Jul 2, 2013·5 cites·14 claims
- 0489US6475306B1Hot rolled steel wire rod or bar for machine structural use and method for producing the sameNIPPON STEEL CORP·Filed 2001·Granted Nov 5, 2002·22 cites·5 claims
- 0584US8821652B2Steel for induction hardening and induction hardened steel partKOZAWA SHUJI·Filed 2010·Granted Sep 2, 2014·3 cites·3 claims
- 0682US10889870B2Steel component, gear component, and producing method for steel componentAISIN AW CO·Filed 2017·Granted Jan 12, 2021·2 cites·20 claims
- 0781US9469883B2Carburized steel part having excellent low cycle bending fatigue strengthNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Granted Oct 18, 2016·2 cites·4 claims
- 0881US8673094B2Case hardening steel and manufacturing method thereofHASHIMURA MASAYUKI·Filed 2011·Granted Mar 18, 2014·2 cites·13 claims
- 0980US11458762B2Railway wheelNIPPON STEEL CORP·Filed 2018·Granted Oct 4, 2022·3 cites·5 claims
- 1080US9506137B2Gas-carburized steel part excellent in surface fatigue strength, steel product for gas carburizing, and manufacturing method of gas-carburized steel partKOYAMA TATSUYA·Filed 2011·Granted Nov 29, 2016·2 cites·9 claims
- 1180US8980022B2Case hardening steel, carburized component, and manufacturing method of case hardening steelMIYANISHI KEI·Filed 2010·Granted Mar 17, 2015·3 cites·3 claims
- 1280US8876988B2Steel for nitriding and nitrided partCHIDA TETSUSHI·Filed 2011·Granted Nov 4, 2014·3 cites·14 claims
- 1379US10724125B2Spring steelNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Jul 28, 2020·1 cites·4 claims
- 1479US9255314B2Hot-forging micro-alloyed steel and hot-rolled steel excellent in fracture-splitability and machinability, and component made of hot-forged microalloyed steelNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Feb 9, 2016·1 cites·7 claims
- 1579US6551419B2Hot-rolled steel wire and rod for machine structural use and a method for producing the sameNIPPON STEEL CORP·Filed 2001·Granted Apr 22, 2003·12 cites·4 claims
- 1679US6488787B1Cold workable steel bar or wire and processNIPPON STEEL CORP·Filed 2000·Granted Dec 3, 2002·13 cites·12 claims
- 1779US6261388B1Cold forging steel having improved resistance to grain coarsening and delayed fracture and process for producing sameNIPPON STEEL CORP·Filed 1999·Granted Jul 17, 2001·22 cites·4 claims
- 1877US9797045B2Steel for carburizing, carburized steel component, and method of producing the sameKUBOTA MANABU·Filed 2012·Granted Oct 24, 2017·1 cites·10 claims
- 1977US9796158B2Steel for carburizing, carburized steel component, and method of producing the sameKUBOTA MANABU·Filed 2012·Granted Oct 24, 2017·1 cites·10 claims
- 2077US8733199B2Gears and its process of manufactureOBAYASHI KOJI·Filed 2011·Granted May 27, 2014·6 cites·13 claims
- 2176US7754029B2Steel with excellent delayed fracture resistance and tensile strength of 1801 MPa class or more, and its shaped articleNIPPON STEEL CORP·Filed 2006·Granted Jul 13, 2010·2 cites·9 claims
- 2275US6547890B2Steel wire rod for cold forging and method for producing the sameNIPPON STEEL CORP·Filed 2001·Granted Apr 15, 2003·10 cites·6 claims
- 2374US6660105B1Case hardened steel excellent in the prevention of coarsening of particles during carburizing thereof, method of manufacturing the same, and raw shaped material for carburized partsNIPPON STEEL CORP·Filed 1998·Granted Dec 9, 2003·24 cites·9 claims
- 2472US10391742B2Steel for carburizing, carburized steel component, and method of producing the sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2017·Granted Aug 27, 2019·0 cites·14 claims
- 2572US8715428B2Hot-forging micro-alloyed steel and hot-rolled steel excellent in fracture-splitability and machinability, and component made of hot-forged microalloyed steelKUBOTA MANABU·Filed 2008·Granted May 6, 2014·1 cites·7 claims
- 2671US8386862B2Fault diagnosis apparatus and fault diagnosis method of multi-channel analog input/output circuitHITACHI LTD·Filed 2010·Granted Feb 26, 2013·4 cites·4 claims
- 2770US12352309B2CrankshaftNIPPON STEEL CORP·Filed 2021·Granted Jul 8, 2025·0 cites·6 claims
- 2870US11890894B2Railway wheelNIPPON STEEL CORP·Filed 2019·Granted Feb 6, 2024·1 cites·4 claims
- 2970US10196720B2Steel for nitrocarburizing, nitrocarburized steel part, and producing method of nitrocarburized steel partNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Feb 5, 2019·0 cites·4 claims
- 3069US9187797B2Steel part for machine structural use and manufacturing method thereofTERAMOTO SHINYA·Filed 2012·Granted Nov 17, 2015·1 cites·3 claims
- 3168US11237334B2Fiber moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 1, 2022·1 cites·12 claims
- 3266US11739788B2Crankshaft and method of manufacturing the sameNIPPON STEEL CORP·Filed 2019·Granted Aug 29, 2023·0 cites·2 claims
- 3364US7510614B2High strength bolt excellent in delayed fracture resistance and method of production of sameNIPPON STEEL CORP·Filed 2006·Granted Mar 31, 2009·2 cites·5 claims
- 3462US9890446B2Steel for induction hardening roughly shaped material for induction hardeningNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Feb 13, 2018·0 cites·15 claims
- 3561US12403526B2Crankshaft and method of manufacturing forged material for crankshaftNIPPON STEEL CORP·Filed 2020·Granted Sep 2, 2025·0 cites·4 claims
- 3661US12049102B2Railway wheelNIPPON STEEL CORP·Filed 2019·Granted Jul 30, 2024·0 cites·8 claims
- 3761US9436465B2Moving average processing in processor and processorFUJITSU LTD·Filed 2014·Granted Sep 6, 2016·1 cites·15 claims
- 3860US9284632B2Steel for nitrocarburizing, nitrocarburized steel part, and producing method of nitrocarburized steel partKUBOTA MANABU·Filed 2011·Granted Mar 15, 2016·0 cites·4 claims
- 3959US2023119875A1Railway wheelNIPPON STEEL CORP·Filed 2021·Application pending·0 cites
- 4058US11578775B2Brake lining for railway vehicle, disc brake system for railway vehicle including same, and sintered friction material to be used for brake lining for railway vehicleNIPPON STEEL CORP·Filed 2018·Granted Feb 14, 2023·0 cites·10 claims
- 4158US10036086B2Non-heat treated steelNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Granted Jul 31, 2018·0 cites·6 claims
- 4258US9039962B2Steel for induction hardening, roughly shaped material for induction hardening, producing method thereof, and induction hardening steel partKUBOTA MANABU·Filed 2011·Granted May 26, 2015·0 cites·11 claims
- 4358US2009020195A1High Strength Spring Steel Wire and High Strength Spring and Methods of Production of the SameNIPPON STEEL CORP·Filed 2008·Application pending·0 cites
- 4457US10202677B2Production method of carburized steel component and carburized steel componentNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Feb 12, 2019·0 cites·9 claims
- 4557US2011310924A1High strength spring steel wire and high strength spring and methods of production of the sameKUBOTA MANABU·Filed 2011·Application pending·0 cites
- 4656US2012018063A1Case-hardened steel superiorin cold workability, machinability, and fatigue characteristics after carburized quenching and method of production of sameHASHIMURA MASAYUKI·Filed 2009·Application pending·0 cites
- 4755US11110741B2Railway wheelNIPPON STEEL & SUMITOMO METAL CORP·Filed 2017·Granted Sep 7, 2021·0 cites·4 claims
- 4855US9523404B2Spring steel and springTERAMOTO SHINYA·Filed 2012·Granted Dec 20, 2016·0 cites·4 claims
- 4955US9100965B2Apparatus and method for multiplexing data of a layer into data transmission unit of another layerFUJITSU LTD·Filed 2014·Granted Aug 4, 2015·0 cites·5 claims
- 5054US11674206B2Sintered friction material for railway vehicles and method for producing the sameNIPPON STEEL CORP·Filed 2017·Granted Jun 13, 2023·0 cites·6 claims
Showing the top 50 of 80 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →