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. 24, 2006
Filed:
Jan. 28, 2003
Masaaki Suzuki, Osaka, JP;
Takashi Hashida, Osaka, JP;
Kazuhiko Hashimoto, Moriguchi, JP;
Masahiko Hashimoto, Shijonawate, JP;
Hidetomo Nagahara, Kyoto, JP;
Seigo Shiraishi, Neyagawa, JP;
Norihisa Takahara, Ibaraki, JP;
Masaaki Suzuki, Osaka, JP;
Takashi Hashida, Osaka, JP;
Kazuhiko Hashimoto, Moriguchi, JP;
Masahiko Hashimoto, Shijonawate, JP;
Hidetomo Nagahara, Kyoto, JP;
Seigo Shiraishi, Neyagawa, JP;
Norihisa Takahara, Ibaraki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An acoustic matching layeraccording to the present invention includes a first acoustic matching layer, which has a low density and a low sonic velocity, and a second acoustic matching layer, which has a higher density and a higher sonic velocity. The first acoustic matching layer, of which the acoustic impedance is matched to that of a medium into an ultrasonic wave is radiated, is provided closer to the medium, while the second acoustic matching layeris provided closer to a piezoelectric layer, thereby increasing the sensitivity of an ultrasonic transducer.