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:
Jul. 03, 2012
Filed:
Jan. 21, 2009
Shigenobu Nakamura, Kirishima, JP;
Hiroyuki Masuyama, Kirishima, JP;
Shigenobu Nakamura, Kirishima, JP;
Hiroyuki Masuyama, Kirishima, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
A method of manufacturing a multi-layer piezoelectric element is disclosed. The method forms a stack from at least one piezoelectric layer and a plurality of internal electrodes stacked one on another; grinds at least two side faces of the stack, thereby forming one or more cracks on the two side faces; and applies an electrically conductive paste containing 1% by weight or more glass onto the two side faces and firing the stack at such a temperature that is higher than the softening point of the glass and causes the electrically conductive paste that has been applied to shrink by 10% or more in the direction of thickness, thereby forming the external electrodes.