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:
Aug. 12, 2014
Filed:
May. 04, 2012
Ryo Shimamura, Yokohama, JP;
Takeshi Shibata, Yokohama, JP;
Akira Yamamoto, Yokohama, JP;
Toshiaki Hirosawa, Hiratsuka, JP;
Hiroki Tajima, Yokohama, JP;
Ryo Shimamura, Yokohama, JP;
Takeshi Shibata, Yokohama, JP;
Akira Yamamoto, Yokohama, JP;
Toshiaki Hirosawa, Hiratsuka, JP;
Hiroki Tajima, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for manufacturing a flow passage assembly includes forming a first flow passage in a first joint interface formed by welding a first surface of a first flow passage forming member to a first surface of a second flow passage forming member using an ultrasonic welding process, and forming, after the first flow passage is formed, a second flow passage in a second joint interface formed by welding a first surface of a third flow passage forming member to one of a second surface of the first flow passage forming member and a second surface of the second flow passage forming member using an ultrasonic welding process. A total area of weld portions used when the first flow passage is formed is greater than a total area of weld portions used when the second flow passage is formed.