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:
Jul. 14, 2026
Filed:
Jul. 29, 2024
Seiko Epson Corporation, Tokyo, JP;
Daichi Orihara, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejection apparatus includes an ejection portion including a piezoelectric element driven by a drive signal, a first wire to which a first drive signal of the drive signal is supplied, a second wire electrically coupled to an element electrode of the piezoelectric element, and a detection circuit detecting a potential of the element electrode varying according to a vibration remaining in the piezoelectric element after driving of the piezoelectric element, wherein a first amplifier circuit of the detection circuit includes a first amplifier having a first input terminal, a second input terminal, and a first output terminal, a first resistor electrically coupling a first node electrically coupled to the first input terminal and a second node electrically coupled to the first output terminal, and a second resistor electrically coupling the first node and the second wire, and the first wire is electrically coupled to the second input terminal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile