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. 03, 2015
Filed:
Apr. 30, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Kazunari Ishizuka, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing a liquid ejection head, and the method includes a process of providing a first photosensitive resin layer containing a photodegradable positive photosensitive resin and serving as a mold material of the channel on a substrate, a process of providing a gas barrier layer having a film density of 1 g/cmor more on the first photosensitive resin layer, a process of subjecting the first photosensitive resin layer and the gas barrier layer to pattern exposure, and then performing development to thereby form the mold material of a channel and also removing the gas barrier layer before or simultaneously with the development, a process of providing a second photosensitive resin layer on the mold material and the substrate, a process of subjecting the second photosensitive resin layer to pattern exposure, and then performing development, and a process of removing the mold material of the channel.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile