Inventor
UMAYAHARA KENJI
JP64 patents
⚠️ This page may combine multiple inventors who share the name “UMAYAHARA KENJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
29 patentsUS6851298B2Feb 8, 2005
Fluid leakage detection apparatus and fluid leakage detection method
TOYOTA MOTOR CO LTD40 citations92
US7648787B2Jan 19, 2010
Gas leak detection device and fuel cell system
TOYOTA MOTOR CO LTD9 citations83
US10291054B2May 14, 2019
Fuel cell system
TOYOTA MOTOR CO LTD4 citations73
US10497995B2Dec 3, 2019
Fuel cell system and control method of the same
TOYOTA MOTOR CO LTD2 citations72
US9884567B2Feb 6, 2018
Vehicle including fuel cell system
TOYOTA MOTOR CO LTD2 citations72
US9776526B2Oct 3, 2017
Fuel cell system, fuel cell vehicle, and method of controlling fuel cell system
TOYOTA MOTOR CO LTD2 citations72
US10118493B2Nov 6, 2018
System and method for controlling regenerative braking force of a vehicle
TOYOTA MOTOR CO LTD4 citations71
US10099557B2Oct 16, 2018
Vehicle driven by motor and control method of charging and discharging of secondary battery provided in vehicle
TOYOTA MOTOR CO LTD2 citations71
US9821662B2Nov 21, 2017
Braking force control system, vehicle and method of controlling braking force
TOYOTA MOTOR CO LTD2 citations71
US9758169B2Sep 12, 2017
Vehicle employing ordinary and deceleration enhanced drive modes in an accelerator-off state
TOYOTA MOTOR CO LTD3 citations71
US7438146B2Oct 21, 2008
Moving object mounting fuel cell
TOYOTA MOTOR CO LTD4 citations61
US11152632B2Oct 19, 2021
Fuel cell system and control method
TOYOTA MOTOR CO LTD0 citations60
US11367884B2Jun 21, 2022
Hydrogen supply system, train and hydrogen supply method
TOYOTA MOTOR CO LTD0 citations59
US11342568B2May 24, 2022
Fuel cell vehicle and method using fuel cell vehicle
TOYOTA MOTOR CO LTD1 citations59
US11018357B2May 25, 2021
Fuel cell system and method of controlling fuel cell
TOYOTA MOTOR CO LTD0 citations53
US11489182B2Nov 1, 2022
Fuel cell system
TOYOTA MOTOR CO LTD0 citations52
US10128523B2Nov 13, 2018
Fuel cell system and control method for the same
TOYOTA MOTOR CO LTD1 citations52
US9796294B2Oct 24, 2017
Vehicle driven by electric motor and control method for vehicle
TOYOTA MOTOR CO LTD1 citations52
US8053124B2Nov 8, 2011
Fuel cell system and mobile body
TOYOTA MOTOR CO LTD0 citations52
US11214151B2Jan 4, 2022
Voltage control system with addition term and fuel cell system
TOYOTA MOTOR CO LTD0 citations51
US10115990B2Oct 30, 2018
Fuel cell system, fuel cell vehicle, and method for controlling fuel cell system
TOYOTA MOTOR CO LTD1 citations51
US10056626B2Aug 21, 2018
Fuel cell system, fuel cell vehicle, and control method for fuel cell system
TOYOTA MOTOR CO LTD1 citations51
US9873351B2Jan 23, 2018
Fuel cell system, fuel cell vehicle, and method of controlling fuel cell system
TOYOTA MOTOR CO LTD0 citations51
US7608354B2Oct 27, 2009
Fuel cell system and control method of same
TOYOTA MOTOR CO LTD1 citations51
US10427685B2Oct 1, 2019
Vehicle capable of regenerative braking, and control method of a vehicle capable of regenerative braking
TOYOTA MOTOR CO LTD0 citations50
US10103394B2Oct 16, 2018
Fuel cell system programmed for improved air compressor control
TOYOTA MOTOR CO LTD1 citations50
US9889763B2Feb 13, 2018
External power supply of fuel cell mounted vehicle and control method therefor
TOYOTA MOTOR CO LTD1 citations50
US11069204B2Jul 20, 2021
Energy generation system using biomass and method of controlling the same
TOYOTA MOTOR CO LTD0 citations49
US11285822B2Mar 29, 2022
Electric power system and control method therefor
TOYOTA MOTOR CO LTD0 citations45
UMAYAHARA KENJI
14 patentsUS8273490B2Sep 25, 2012
Fuel cell system
UMAYAHARA KENJI7 citations83
US8853989B2Oct 7, 2014
Fuel cell system and motor driving method
UMAYAHARA KENJI4 citations73
US8642224B2Feb 4, 2014
Fuel cell system with a learning capability to readjust the driving characteristic of a gas supply device and vehicle
UMAYAHARA KENJI4 citations73
US9034495B2May 19, 2015
Fuel cell system
UMAYAHARA KENJI6 citations69
US8277990B2Oct 2, 2012
Fuel cell system
UMAYAHARA KENJI5 citations63
US8084151B2Dec 27, 2011
Fuel cell system and method therefor
UMAYAHARA KENJI4 citations63
US8999591B2Apr 7, 2015
Fuel cell system for preventing excessive power generation
UMAYAHARA KENJI2 citations61
US8153314B2Apr 10, 2012
Alert method relating to remaining fuel amount of fuel cell system and fuel cell system using the same
UMAYAHARA KENJI5 citations61
US8722265B2May 13, 2014
Fuel cell system
UMAYAHARA KENJI1 citations52
US8658324B2Feb 25, 2014
Fuel cell system
UMAYAHARA KENJI1 citations52
US8626373B2Jan 7, 2014
Fuel cell system and control method of same
UMAYAHARA KENJI1 citations52
US8130108B2Mar 6, 2012
Gas level display controller, gas level display device, and gas level display control method
UMAYAHARA KENJI1 citations52
US8802310B2Aug 12, 2014
Fuel cell system
UMAYAHARA KENJI1 citations51
US8980487B2Mar 17, 2015
Fuel cell system and activating completion degree displaying method of the same
UMAYAHARA KENJI0 citations42
YOSHIDA MICHIO
3 patentsUS8445153B2May 21, 2013
Fuel cell high-potential prevention control system
YOSHIDA MICHIO2 citations63
US8329351B2Dec 11, 2012
Fuel cell system
YOSHIDA MICHIO3 citations63
US9853313B2Dec 26, 2017
Fuel cell system, control method for the fuel cell system, and electric vehicle equipped with the fuel cell system
YOSHIDA MICHIO1 citations52
MAZDA MOTOR
1 patentIMAI ATSUSHI
1 patentMORI HIROAKI
1 patentKAKENO YUJI
1 patentShowing the top 50 of 64 patents by PatentIndex Score.