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:
Mar. 16, 2010
Filed:
Apr. 14, 2004
Applicants:
Marianne Hammer-altmann, Weinheim, DE;
Marc Kuehlein, Gerlingen, DE;
Karolin Lofruthe, Duesseldorf, DE;
Inventors:
Marianne Hammer-Altmann, Weinheim, DE;
Marc Kuehlein, Gerlingen, DE;
Karolin Lofruthe, Duesseldorf, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/491 (2006.01); H01L 41/187 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for manufacturing a PZT-based low-sintering piezoelectric ceramic material, the ions to be added as starting compounds being added as powdered oxides and/or powdered carbonates, mixed together, and then calcined to form the piezoelectric ceramic material. After calcining the starting compounds, lithium in ionic form is added to the mixture in an amount of 0.01 to 0.1 wt. % in relation to the weight of the PZT ceramic.