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. 19, 2010
Filed:
Sep. 29, 2006
Noritake Nakaso, Kitakatsushika-gun, JP;
Shingo Akao, Kitakatsushika-gun, JP;
Kazushi Yamanaka, Sendai-shi, Miyagi 981-3134, JP;
Dong Youn Sim, Fujisawa, JP;
Ichitaro Satoh, Tokyo, JP;
Tetsuya Miyagishi, Tokyo, JP;
Noritake Nakaso, Kitakatsushika-gun, JP;
Shingo Akao, Kitakatsushika-gun, JP;
Kazushi Yamanaka, Sendai-shi, Miyagi 981-3134, JP;
Dong Youn Sim, Fujisawa, JP;
Ichitaro Satoh, Tokyo, JP;
Tetsuya Miyagishi, Tokyo, JP;
Toppan Printing Co., Ltd., Tokyo, JP;
Other;
Yamatake Corporation, Tokyo, JP;
Ball Semiconductor Inc., Allen, TX (US);
Abstract
An environment difference detector includes an elastic surface wave element equipped with a substrate including a surface having an annular surface acoustic wave circulating path, a surface acoustic wave exciting/receiving unit exciting a surface acoustic wave along the circular path and receiving the circulated surface acoustic wave, and a sensitive film disposed on the circular path to change an elastic nature in accordance with a change in an adjacent environment, a speed/intensity measuring unit measuring a circulating speed and intensity of the surface acoustic wave from an electric signal generated by the unit when the unit receives the circulating surface acoustic wave, and an environment evaluation unit evaluating an environment adjacent to the sensitive film from at least one of the circulating speed and the intensity measured by the unit.