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:
Apr. 16, 1985
Filed:
Dec. 17, 1982
Yoshihiko Kasai, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A ceramic resonator including an elongated piezoelectric ceramic platelet having an indentation formed in the center in the longitudinal direction, a polarization in the thickness direction where the polarization occurs at least in the indentation; first and second main surfaces; first and third metal thin film electrodes formed on said first main surface and second and fourth metal thin film electrodes formed on said second main surface, the third electrode being separated from the first electrode and the fourth electrode separated from the second electrode where the resonator has a constant vibration based on the dimensions of the region associated with the indentation the vibration being generated at the narrow part when an electrical signal is applied to the electrodes. Moreover, a ceramic filter consisting of plurality of the ceramic resonators connected in series can also be configured.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile