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:
May. 04, 2021
Filed:
Oct. 29, 2013
Applicants:
Nippon Valqua Industries, Ltd., Tokyo, JP;
A School Corporation Kansai University, Osaka, JP;
Inventors:
Assignees:
Valqua, Ltd., Tokyo, JP;
A School Corporation Kansai University, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/193 (2006.01); D06N 3/04 (2006.01); D06N 3/00 (2006.01); H01G 7/02 (2006.01); H01L 41/45 (2013.01); H01L 41/053 (2006.01);
U.S. Cl.
CPC ...
H01L 41/193 (2013.01); D06N 3/0006 (2013.01); D06N 3/0011 (2013.01); D06N 3/0056 (2013.01); D06N 3/047 (2013.01); H01G 7/02 (2013.01); H01G 7/028 (2013.01); H01L 41/0533 (2013.01); H01L 41/45 (2013.01); D06N 2201/029 (2013.01); D06N 2203/044 (2013.01); D06N 2205/20 (2013.01); D06N 2209/04 (2013.01); D06N 2213/02 (2013.01);
Abstract
A piezoelectric stack includes a porous resin sheet, and a surface coating layer disposed on an exterior surface of the porous resin sheet, the exterior surface including at least one of a front surface and a back surface of the porous resin sheet, the surface coating layer having a volume resistivity of not less than 1×10Ω·cm, the porous resin sheet and the surface coating layer having different elastic moduli.