Inventor
UMEHARA TAKAHIRO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “UMEHARA TAKAHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
12 patentsUS10511227B2Dec 17, 2019
Fuel cell system and method for controlling the fuel cell system
TOYOTA MOTOR CO LTD1 citations61
US11142093B2Oct 12, 2021
Fuel cell vehicle and method for controlling the same
TOYOTA MOTOR CO LTD0 citations58
US12362372B2Jul 15, 2025
Fuel cell system
TOYOTA MOTOR CO LTD0 citations51
US12119736B2Oct 15, 2024
Power supply unit capable of reducing possibility of overcurrent and current shortage
TOYOTA MOTOR CO LTD0 citations51
US11973411B2Apr 30, 2024
Power supply unit with current control
TOYOTA MOTOR CO LTD0 citations51
US11831055B2Nov 28, 2023
Fuel cell system
TOYOTA MOTOR CO LTD0 citations51
US11214151B2Jan 4, 2022
Voltage control system with addition term and fuel cell system
TOYOTA MOTOR CO LTD0 citations51
US11722047B2Aug 8, 2023
Voltage converter
TOYOTA MOTOR CO LTD0 citations49
US12491856B2Dec 9, 2025
Structure
TOYOTA MOTOR CO LTD0 citations44
US10818945B2Oct 27, 2020
Voltage control system, fuel cell system, and control method for voltage control system
TOYOTA MOTOR CO LTD0 citations41
US10693163B2Jun 23, 2020
Fuel cell system and vehicle
TOYOTA MOTOR CO LTD0 citations40
US10573909B2Feb 25, 2020
Fuel cell system
TOYOTA MOTOR CO LTD0 citations40