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:
Nov. 15, 2005
Filed:
Nov. 16, 2001
Clive A. Randall, State College, PA (US);
Amanda L. Baker, Boalsburg, PA (US);
Yi Fang, State College, PA (US);
Thomas Shrout, Port Matilda, PA (US);
Alfons Kelnberger, Stuttgart, DE;
Clive A. Randall, State College, PA (US);
Amanda L. Baker, Boalsburg, PA (US);
Yi Fang, State College, PA (US);
Thomas Shrout, Port Matilda, PA (US);
Alfons Kelnberger, Stuttgart, DE;
The Penn State Research Foundation, University Park, PA (US);
Abstract
Co-fired multilayer piezoelectric ceramic materials with base metal electrodes based on copper, copper alloy, are found as an effective approach to manufacture low cost multilayer piezoelectrics. The method of the invention is performed at low firing temperature and without the oxidation of base metal or reduction of ceramic components. A variety of ceramic materials may be used and copper is the preferred base metal in the multi-layer piezoelectric devices of the invention. This copper has additional protection against oxidation with a small inorganic coating on the surface. With such protection, the binder and other organics can also be efficiently removed and produce superior performance in the piezoelectric structured devices.