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. 18, 2021
Filed:
Mar. 18, 2019
Applicant:
Magnecomp Corporation, Murrieta, CA (US);
Inventors:
Kuen Chee Ee, Chino, CA (US);
Long Zhang, Murrieta, CA (US);
Peter Hahn, Bangkok, TH;
David Glaess, Bangkok, TH;
Assignee:
Magnecomp Corporation, Murrieta, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/48 (2006.01); H01L 41/293 (2013.01); G11B 5/56 (2006.01); G11B 5/55 (2006.01); H01L 41/25 (2013.01); H01L 41/257 (2013.01); H01L 41/312 (2013.01); H01L 41/297 (2013.01);
U.S. Cl.
CPC ...
G11B 5/483 (2015.09); G11B 5/4873 (2013.01); G11B 5/5552 (2013.01); G11B 5/56 (2013.01); H01L 41/25 (2013.01); H01L 41/257 (2013.01); H01L 41/293 (2013.01); H01L 41/297 (2013.01); H01L 41/312 (2013.01); Y10T 29/42 (2015.01);
Abstract
A multi-layer piezoelectric microactuator assembly has at least one poled and active piezoelectric layer and one poled but inactive piezoelectric layer. The poled but inactive layer acts as a constraining layer in resisting expansion or contract of the first piezoelectric layer.