Inventor
HASHIMOTO KEIJI
JP40 patents
⚠️ This page may combine multiple inventors who share the name “HASHIMOTO KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HASHIMOTO KEIJI
8 patentsUS8206865B2Jun 26, 2012
Separator for fuel cell
HASHIMOTO KEIJI5 citations61
US9190680B2Nov 17, 2015
Fuel battery
HASHIMOTO KEIJI1 citations50
US10727511B2Jul 28, 2020
Fuel cell
HASHIMOTO KEIJI0 citations39
US10651495B2May 12, 2020
Fuel cell stack
HASHIMOTO KEIJI0 citations39
US10263272B2Apr 16, 2019
Gas flow path forming bodies of fuel cell, and fuel cell
HASHIMOTO KEIJI0 citations39
US9960433B2May 1, 2018
Gas channel forming member for fuel cells, and fuel cell
HASHIMOTO KEIJI0 citations39
US9917310B2Mar 13, 2018
Gas flow channel forming body for fuel cell, and fuel cell
HASHIMOTO KEIJI0 citations39
US8835064B2Sep 16, 2014
Fuel battery
HASHIMOTO KEIJI0 citations39
DAINIPPON PRINTING CO LTD
4 patentsUS5538816AJul 23, 1996
Halftone phase shift photomask, halftone phase shift photomask blank, and methods of producing the same
DAINIPPON PRINTING CO LTD72 citations96
US5614335AMar 25, 1997
Blanks for halftone phase shift photomasks, halftone phase shift photomasks, and methods for fabricating them
DAINIPPON PRINTING CO LTD20 citations92
US5721075AFeb 24, 1998
Blanks for halftone phase shift photomasks, halftone phase shift photomasks, and methods for fabricating them
DAINIPPON PRINTING CO LTD13 citations74
US5419988AMay 30, 1995
Photomask blank and phase shift photomask
DAINIPPON PRINTING CO LTD15 citations72
TOYOTA AUTO BODY CO LTD
4 patentsUS10547069B2Jan 28, 2020
Fuel cell having end cell with bypass passage
TOYOTA AUTO BODY CO LTD2 citations73
US10840522B2Nov 17, 2020
Fuel cell
TOYOTA AUTO BODY CO LTD2 citations71
US7341799B2Mar 11, 2008
Separator from a fuel cell having first and second portions of different materials
TOYOTA AUTO BODY CO LTD2 citations62
US6855446B1Feb 15, 2005
Fuel cell, separator for fuel cell, and manufacturing method of separator
TOYOTA AUTO BODY CO LTD5 citations56
OTIS ELEVATOR CO
4 patentsUS10259683B2Apr 16, 2019
Method for controlling an elevator system
OTIS ELEVATOR CO3 citations72
US9994429B1Jun 12, 2018
Handrail with a built-in RBI
OTIS ELEVATOR CO6 citations72
US10252882B2Apr 9, 2019
Elevator motion alert system
OTIS ELEVATOR CO2 citations70
US12540053B2Feb 3, 2026
Elevator system with cabin divider
OTIS ELEVATOR CO0 citations62
TOYOTA MOTOR CO LTD
4 patentsUS10790532B2Sep 29, 2020
Fuel cell stack and dummy cell
TOYOTA MOTOR CO LTD1 citations59
US8034510B2Oct 11, 2011
Gas diffusion layer in a fuel cell
TOYOTA MOTOR CO LTD4 citations58
US10511036B2Dec 17, 2019
Fuel cell module with arranged ridge segments
TOYOTA MOTOR CO LTD0 citations39
US10727523B2Jul 28, 2020
Fuel cell stack
TOYOTA MOTOR CO LTD0 citations38