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. 10, 2006
Filed:
Jul. 15, 2003
Hidetomo Nagahara, Kyoto, JP;
Takehiko Suginouchi, Nara, JP;
Masahiko Hashimoto, Shijonawate, JP;
Katsuhiko Asai, Nara, JP;
Hidetomo Nagahara, Kyoto, JP;
Takehiko Suginouchi, Nara, JP;
Masahiko Hashimoto, Shijonawate, JP;
Katsuhiko Asai, Nara, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A composite piezoelectric transducer of the present invention includes a plurality of arranged piezoelectric elements, and dielectric portions positioned between the plurality of piezoelectric elements. In the composite piezoelectric transducer, an area of a cross-section perpendicular to an ultrasonic emitting direction in at least one piezoelectric element of the plurality of piezoelectric elements varies along the ultrasonic emitting direction.