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:
Dec. 23, 2008
Filed:
Aug. 03, 2005
Hirosi Fukuda, Nara, JP;
Takashi Hashida, Osaka, JP;
Yuko Fujii, Nara, JP;
Takaiki Nomura, Osaka, JP;
Shuji Itou, Nara, JP;
Takahiro Sasaki, Nara, JP;
Hirosi Fukuda, Nara, JP;
Takashi Hashida, Osaka, JP;
Yuko Fujii, Nara, JP;
Takaiki Nomura, Osaka, JP;
Shuji Itou, Nara, JP;
Takahiro Sasaki, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A piezoelectric element includes a piezoelectric composition pressure sensitive substance, a first electrode, a second electrode and a covering layer. The piezoelectric composition pressure sensitive substance includes a piezoelectric ceramic powder and a flexible organic polymer. The first and second electrodes are connected to the piezoelectric composition pressure sensitive substance and electrically insulated from each other. The covering layer is provided outside of the piezoelectric ceramic powder and suppresses absorption of the water by the piezoelectric ceramic powder.