Title:
ULTRASONIC TRANSMITTER/RECEIVER, PROCESS FOR PRODUCING THE SAME, AND ULTRASONIC FLOWMETER
Document Type and Number:
WIPO Patent Application WO/2004/057913
Kind Code:
A1
Abstract:
An ultrasonic transmitter/receiver comprising a piezoelectric (2) for transmitting/receiving an ultrasonic wave, and acoustic matching layers (3a, 3b) composed of dry gel. The acoustic matching layers (3a, 3b) are formed of a plurality of dry gel layers having a different acoustic impedance.
Inventors:
NAGAHARA HIDETOMO (JP)
HASHIDA TAKASHI (JP)
SUZUKI MASAAKI (JP)
HASHIDA TAKASHI (JP)
SUZUKI MASAAKI (JP)
Application Number:
PCT/JP2003/015499
Publication Date:
July 08, 2004
Filing Date:
December 03, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
NAGAHARA HIDETOMO (JP)
HASHIDA TAKASHI (JP)
SUZUKI MASAAKI (JP)
NAGAHARA HIDETOMO (JP)
HASHIDA TAKASHI (JP)
SUZUKI MASAAKI (JP)
International Classes:
G01F1/66; G10K11/02; H01L41/08; H04R17/00; (IPC1-7): H04R17/00; G01F1/66
Foreign References:
| JP2002262394A | 2002-09-13 | |||
| JPH1075953A | 1998-03-24 | |||
| JP2002135895A | 2002-05-10 | |||
| JPH0686397A | 1994-03-25 |
Attorney, Agent or Firm:
Okuda, Seiji (10th Floor Osaka Securities Exchange Bldg.,
8-16, Kitahama 1-chome, Chuo-k, Osaka-shi Osaka, JP)
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