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:
Jan. 04, 2022
Filed:
Aug. 09, 2018
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Yusuke Kitano, Kanagawa, JP;
Mitsuo Yokohata, Osaka, JP;
Abstract
A flow rate measurement device includes a flow rate measurer to measure a fluid flow rate at regular time intervals, a period setting unit, an arithmetic unit to calculate first average flow rates and amounts of change each between the average flow rates in sequence, and second average flow rates and amounts of change each between the average flow rates in sequence, and a fuel cell determinator to determine whether a fuel cell is in operation. The fuel cell determinator determines that a fuel cell is in operation when an increment of the second average flow rate repeats for first predetermined successive times, an increment of the first average flow rate repeats for second predetermined times or more in each of the second periods, and an increment of the first average flow rate not greater than or equal to a third predetermined flow rate in each of the second periods.