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:
Jul. 01, 2003
Filed:
Feb. 13, 2002
Satoshi Fukuhara, Tokyo, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
An ultrasonic flowmeter, wherein upstream and downstream receive signals are A/D-converted and thereby the discrete values thereof are determined; a cross-correlation between the upstream and downstream receive signals is determined; the result of calculation by correlation processing means is Hilbert-transformed; a phase relationship is determined by phase calculating means from the results of calculation by the correlation processing means and calculation by Hilbert transform; and a time difference in calculated from the phase calculation result provided by the phase calculating means through maximum value decision means.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile