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. 30, 2003
Filed:
Oct. 19, 2001
Applicant:
Inventors:
Jun-ichi Kushibiki, Miyagi, JP;
Yuu Ono, Miyagi, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/904 ;
U.S. Cl.
CPC ...
G01N 2/904 ;
Abstract
The temperature distribution in water is measured by two thermocouples to obtain a temperature compensating parameter. Under measurement conditions where the temperature distribution in water varies, a measured V(z) curve is used to monitor a change in the wave number of a longitudinal wave in an ultrasonic wave propagation region in water to thereby detect variations in the water temperature and the longitudinal wave velocity with high accuracy.