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:
Jun. 18, 2019
Filed:
May. 26, 2008
Ryuji Iwamoto, Nara, JP;
Ryuji Iwamoto, Nara, JP;
Abstract
When an appliance identification art is provided, the computing speed and the identification accuracy are improved while the required memory amount, etc., is decreased. In a gas meter, an ultrasonic flowmetermeasures the flow rate of gas flowing into a flow pathat a given time interval, and a computation sectioncomputes a difference value of the predetermined time period between the measured flow rates. A difference value conversion sectionconverts the computed difference value into a code with reference to a flow rate class table by which classes of difference values corresponding to a size of the difference value and codes representing the classes are associated with each other. Further, a flow rate change history generation sectiongenerates a flow rate change history approximately representing flow rate change of gas based on a set of the codes of the predetermined time period.