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:
Oct. 21, 2008
Filed:
Jun. 30, 2004
Kiyoshi Fujii, Yokohama, JP;
Kiyoshi Fujii, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A technology is disclosed for holding the test subject contact surface temperature below a predetermined value without providing a temperature sensor or setting ultrasonic wave output excessively low and, according to this technology, reflex time twhich passes through oilis reflected by the inner surface of windowand is returned via oil, and reflex time twhich passes through the window, is reflected by the outer surface of the window, and returned via window or oil, are detected,sound velocity of window=(thickness of window×2)/(21)is measured, and the surface temperature of the window is detected from this measured sound velocity.