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:
Sep. 24, 2013
Filed:
Jul. 01, 2009
Applicants:
Kazuyuki Kaigawa, Kitanagoya, JP;
Ritsu Tanaka, Nagoya, JP;
Hirofumi Yamaguchi, Komaki, JP;
Inventors:
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/16 (2006.01); H01L 41/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
Piezoelectric materials having improved electrical properties, and manufacturing methods of the same, are provided. In (Li, Na, K, Bi)(Nb, Ta)Obased piezoelectric materials, the surface microstructures of sintered bodies include microscopic grains having grain diameters of less than 5 μm, intermediate grains having grain diameters of 5 μm or more and less than 15 μm, and coarse grains having grain diameters of 15 μm or more and 100 μm or less.