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. 03, 2026
Filed:
Mar. 21, 2024
Takuma Hirabayashi, Tokyo, JP;
Kaname Morita, Kanagawa, JP;
Takuma Hirabayashi, Tokyo, JP;
Kaname Morita, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A piezoelectric actuator includes: a substrate having an opening; a diaphragm having one face on the substrate in a first direction, the diaphragm facing the opening; a lower electrode on another face of the diaphragm opposite to the one face of the diaphragm in the first direction; a piezoelectric body on the lower electrode in the first direction; and an upper electrode on the piezoelectric body in the first direction, wherein the lower electrode has a thick portion on a part of the lower electrode, the thick portion has a thickness larger than a portion other than the part of the lower electrode in the first direction, and the upper electrode has a raised portion on a part of the upper electrode covering at least a portion of the thick portion of the lower electrode in a second direction orthogonal to the first direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile