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:
Nov. 09, 2004
Filed:
Apr. 20, 2004
Hiroyuki Kamei, Nagano, JP;
Masami Murai, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A first substrate defines a plurality of pressure generating chambers. The first substrate includes a vibration plate which forms a first surface of the first substrate, and formed with a first through hole. A plurality of piezoelectric elements are provided on the vibration plate. A second substrate is bonded onto at least the first surface of the first substrate. The second substrate is formed with a second through hole communicated with the first through hole. A laminated film includes a coating layer comprised of a resin material. The laminated film is provided on an inner wall face of a communicating portion at which the first through hole and the second through hole are connected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile