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:
May. 07, 2002
Filed:
Aug. 16, 2000
Takuya Sawada, Moriyama, JP;
Masahiko Kimura, Kusatsu, JP;
Akira Ando, Omihachiman, JP;
Koichi Hayashi, Shiga-ken, JP;
Abstract
A piezoelectric ceramic composition mainly contains a component of the formula SrBi Nb O and includes Si in a proportion of more than mol and equal to or less than about 0.3 mol relative to 1 mol of Bi in the main component of the formula. This piezoelectric ceramic composition can be fired at lower temperatures, exhibits a practicable electromechanical coefficient kt even when fired at firing temperatures of 1100 ° C. or less, and is useful as materials for piezoelectric ceramic filters, piezoelectric ceramic oscillators, piezoelectric ceramic resonators, and other piezoelectric ceramic devices. By using the piezoelectric ceramic composition, satisfactory piezoelectric ceramics can be obtained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile