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:
Feb. 24, 2026
Filed:
Mar. 15, 2024
Keishi Miwa, Kanagawa, JP;
Keishi Miwa, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A piezoelectric actuator includes: a substrate having an opening; a diaphragm: having a first face on one face of the substrate; and facing the opening; and a piezoelectric element including: a lower electrode; a piezoelectric body; and an upper electrode, and the lower electrode, the piezoelectric body, and the upper electrode being sequentially laminated on a second face opposite to the first face of the diaphragm in a lamination direction, wherein the lower electrode includes: a first lower electrode extending in a first direction; and multiple second lower electrodes: each extending in the first direction; on each of both sides of the first lower electrode in a second direction orthogonal to the first direction; and separated from the first lower electrode in the second direction, and the piezoelectric body is interior of both ends of the opening in the second direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile