The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2025
Filed:
Jun. 01, 2022
Yanmar Holdings Co., Ltd., Osaka, JP;
Takuya Hiraiwa, Osaka, JP;
Takehiro Maruyama, Osaka, JP;
Yasuyoshi Yamaguchi, Osaka, JP;
Manabu Shinagawa, Osaka, JP;
Yukihiko Kimura, Kunisaki, JP;
YANMAR HOLDINGS CO., LTD., Osaka, JP;
Abstract
An exemplary fuel cell ship is a fuel cell ship for propelling a hull by using electric power supplied from a fuel cell that generates electric power through an electrochemical reaction of fuel, and includes a compartment including an emission source of the fuel and a first detector arranged in the compartment to detect the fuel. If the first detector detects that a concentration of the fuel in the compartment is equal to or greater than a first threshold value, a power supply to a non-explosion-proof device in the compartment is stopped.