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. 04, 1983
Filed:
Mar. 19, 1981
Applicant:
Inventors:
Akio Kumada, Kokubunji, JP;
Takahiko Ihochi, Koganei, JP;
Masashi Tanaka, Koganei, JP;
Kazuma Suzuki, Fuchu, JP;
Masaru Yokosuka, Hachioji, JP;
Shinsuke Miura, Hachioji, JP;
Tsutomu Ochiai, Fuchu, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310358 ; 310322 ; 310334 ; 310363 ; 252 629 ; 368255 ;
Abstract
Disclosed is a transparent piezoelectric transducer comprising, at least, a transparent vibrator and at least one plate of a piezoelectric ceramic material sandwiched between a pair of transparent electrodes, said transparent vibrator being disposed so as to be vibrated by the piezoelectric ceramic material plate, said piezoelectric ceramic material being a ceramic material which is represented by a formula: