Inventor · disambiguated record
Harol Koyama
Also filed as: KOYAMA HAROL
2 granted patents·1 pending application·1 citations·filing 2016–2022
34Inventor score
Top patents by PatentIndex Score
3 records- 0180US11316180B2Hydrogen-producing fuel cell systems and methods of operating hydrogen-producing fuel cell systems for backup power operationsH2 POWERTECH LLC·Filed 2021·Granted Apr 26, 2022·1 cites·25 claims
- 0271US11831051B2Hydrogen-producing fuel cell systems and methods of operating hydrogen-producing fuel cell systems for backup power operationsH2 POWERTECH LLC·Filed 2022·Granted Nov 28, 2023·0 cites·23 claims
- 0325US2017222239A1Fuel mixing apparatus, fuel cell system, and fuel mixing-and-transmitting methodCHUNG-HSIN ELECTRIC & MACHINERY MFG CORP·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →