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:
Dec. 08, 2020
Filed:
Sep. 12, 2019
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Katsumi Kakamu, Kuwana, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A liquid ejection head, including: first supply passages and first discharge passages extending in a first direction and arranged in a second direction intersecting the first direction; and a second supply passage extending in the second direction and communicating with the first supply passages to supply the liquid thereto and a second discharge passage extending in the second direction and communicating with the first discharge passages to discharge the liquid therefrom, wherein (A) a cross-sectional area of the second supply passage on a plane orthogonal to the second direction at a first portion thereof differs from that at a second portion thereof spaced apart from the first portion in the second direction and/or (B) a cross-sectional area of the second discharge passage on the plane at a first portion thereof differs from that at a second portion thereof spaced apart from the first portion in the second direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile