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:
Nov. 01, 2011
Filed:
Aug. 25, 2008
Katsuhiro Wakabayashi, Hachioji, JP;
Hideo Adachi, Iruma, JP;
Mamoru Hasegawa, Nagano, JP;
Kazuya Matsumoto, Nagano, JP;
Kazuhisa Karaki, Nagano, JP;
Yoshitaka Kamiya, Nagano, JP;
Katsuhiro Wakabayashi, Hachioji, JP;
Hideo Adachi, Iruma, JP;
Mamoru Hasegawa, Nagano, JP;
Kazuya Matsumoto, Nagano, JP;
Kazuhisa Karaki, Nagano, JP;
Yoshitaka Kamiya, Nagano, JP;
Olympus Medical Systems Corp., Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A ultrasonic transducer of the invention comprises: a transducer cell including a first electrode and a second electrode disposed separated from the first electrode by an air gap portion; and an electret for applying a potential difference between the first electrode and the second electrode. The electret is disposed in a region where at least a part thereof does not overlap with the transducer cell when viewed from a transmitting direction of ultrasonic waves.