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:
Oct. 09, 2007
Filed:
Feb. 09, 2005
Toyonori Sasaki, Anjo, JP;
Atsuhiro Takagi, Kariya, JP;
Shingo Hattori, Tshushima, JP;
Tomohiro Kanbe, Nagoya, JP;
Toyonori Sasaki, Anjo, JP;
Atsuhiro Takagi, Kariya, JP;
Shingo Hattori, Tshushima, JP;
Tomohiro Kanbe, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An ink cartridge includes an ink chamber, an air introduction opening that introduces air inside the ink chamber, a first sealing member that is capable of blocking and allowing communication between the air introduction opening and an area outside of the ink cartridge, an ink supply opening that supplies ink from the ink chamber, a second sealing member that is capable of blocking and allowing communication between the ink supply opening and the area outside of the ink cartridge, and a check valve provided between the second sealing member and the ink chamber, wherein the check valve blocks a flow of the ink in the ink supply opening from the area outside of the ink supply opening toward the ink chamber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile