Inventor
NAGANUMA YOSHIAKI
JP55 patents
⚠️ This page may combine multiple inventors who share the name “NAGANUMA YOSHIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
30 patentsUS7976067B2Jul 12, 2011
Gas fuel tank-equipped vehicle
TOYOTA MOTOR CO LTD45 citations93
US10483572B2Nov 19, 2019
Flow control method of cooling medium in a fuel cell system, and fuel cell system
TOYOTA MOTOR CO LTD2 citations73
US9819035B2Nov 14, 2017
Fuel cell system
TOYOTA MOTOR CO LTD2 citations73
US10388974B2Aug 20, 2019
Fuel cell system and emergency stop method
TOYOTA MOTOR CO LTD3 citations72
US12172516B2Dec 24, 2024
Attachment for fuel inlet of vehicle
TOYOTA MOTOR CO LTD0 citations62
US12157363B2Dec 3, 2024
Vehicle comprising fuel inlet
TOYOTA MOTOR CO LTD0 citations62
US10312532B2Jun 4, 2019
Residual water scavenging processing method in fuel cell system and fuel cell system
TOYOTA MOTOR CO LTD1 citations62
US12489124B2Dec 2, 2025
Fuel cell system
TOYOTA MOTOR CO LTD0 citations52
US10074865B2Sep 11, 2018
Fuel cell system and fuel cell system control method
TOYOTA MOTOR CO LTD0 citations52
US9825317B2Nov 21, 2017
Fuel cell system and control method of the same
TOYOTA MOTOR CO LTD0 citations52
US9793561B2Oct 17, 2017
Fuel cell system and control method of fuel cell system
TOYOTA MOTOR CO LTD0 citations52
US8383279B2Feb 26, 2013
Fuel cell system and method for calculating circulation ratio in the same
TOYOTA MOTOR CO LTD0 citations52
US11050072B2Jun 29, 2021
Fuel cell system and operation control method of the same
TOYOTA MOTOR CO LTD0 citations51
US9509005B2Nov 29, 2016
Fuel cell system
TOYOTA MOTOR CO LTD1 citations50
US10629927B2Apr 21, 2020
Fuel cell system and method for discharging fluid in the system
TOYOTA MOTOR CO LTD0 citations42
US10340542B2Jul 2, 2019
Fuel cell system and control method of fuel cell
TOYOTA MOTOR CO LTD0 citations42
US8361667B2Jan 29, 2013
Fuel cell system and its control method
TOYOTA MOTOR CO LTD0 citations42
US10777827B2Sep 15, 2020
Water drainage device for fuel cell, fuel cell system, moving body and control method of fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US10714770B2Jul 14, 2020
Fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US10476092B2Nov 12, 2019
Fuel cell system, fuel cell mountable vehicle and method of controlling fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US10381668B2Aug 13, 2019
Operation control method of fuel cell and operation control apparatus of fuel cell
TOYOTA MOTOR CO LTD0 citations41
US10312535B2Jun 4, 2019
Fuel cell system including control of rotation speed of a gas pump
TOYOTA MOTOR CO LTD0 citations41
US10224558B2Mar 5, 2019
Fuel cell system and operation control method of the same
TOYOTA MOTOR CO LTD0 citations41
US10135082B2Nov 20, 2018
Fuel cell system and control method of fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US9991533B2Jun 5, 2018
Fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US9991528B2Jun 5, 2018
Fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US9941530B2Apr 10, 2018
Fuel cell system including water content estimation
TOYOTA MOTOR CO LTD0 citations41
US9941532B2Apr 10, 2018
Fuel cell system and control method of fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US9899690B2Feb 20, 2018
Method of discharging water from fuel cell and fuel cell system
TOYOTA MOTOR CO LTD0 citations41
US9880567B2Jan 30, 2018
Valve control apparatus and valve control method
TOYOTA MOTOR CO LTD0 citations41
NAGANUMA YOSHIAKI
7 patentsUS8580449B2Nov 12, 2013
Fuel cell system and power supply control method
NAGANUMA YOSHIAKI3 citations62
US8765316B2Jul 1, 2014
Fuel cell system
NAGANUMA YOSHIAKI3 citations61
US8158293B2Apr 17, 2012
Fuel cell system
NAGANUMA YOSHIAKI5 citations61
US8927168B2Jan 6, 2015
Fuel cell system control during low efficiency operation
NAGANUMA YOSHIAKI1 citations51
US8252469B2Aug 28, 2012
Fuel cell system and water discharge control method for the system
NAGANUMA YOSHIAKI1 citations51
US9425473B2Aug 23, 2016
Fuel cell system and method of operating fuel cell system
NAGANUMA YOSHIAKI0 citations50
US8871401B2Oct 28, 2014
Fuel cell system
NAGANUMA YOSHIAKI1 citations50
IMANISHI HIROYUKI
2 patentsCIBA SC HOLDING AG
1 patentCIBA GEIGY CORP
1 patentKANIE NAOKI
1 patentMIZUNO HIDEAKI
1 patentSAKAJO YUICHI
1 patentSUEMATSU KEIGO
1 patentHASUKA YOSHINOBU
1 patentTANAKA HIROMI
1 patentTSUCHIYA NAOHISA
1 patentMIZUNO NOBUKAZU
1 patentKAKENO YUJI
1 patentShowing the top 50 of 55 patents by PatentIndex Score.