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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.:

US 12766841 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Oct. 17, 2022

Liquid ejection head, and method for producing liquid ejection head

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Kazunari Ishizuka, Shizuoka, JP;

Satoshi Tsutsui, Kanagawa, JP;

Yohei Hamade, Tokyo, JP;

Miho Ishii, Kanagawa, JP;

Haruka Yamaji, Tokyo, JP;

Hikaru Sugimoto, Kanagawa, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Canon.U.S.A., .Inc. IP Division

Primary Examiner:

Sally A Merkling

Assistant Examiner:

Andrew Preston Traywick

Int. Cl.
CPC ...
B41J 2/16 (2006.01); G03F 7/038 (2006.01); G03F 7/16 (2006.01); G03F 7/20 (2006.01); G03F 7/32 (2006.01);
U.S. Cl.
CPC ...
B41J 2/1631 (2013.01); B41J 2/1645 (2013.01); G03F 7/0382 (2013.01); G03F 7/0387 (2013.01); G03F 7/162 (2013.01); G03F 7/2018 (2013.01); G03F 7/32 (2013.01);
Abstract

A liquid ejection head includes a substrate having a liquid feeding port and an energy generating element, a substrate protective layer provided on the substrate, and a nozzle forming member provided on the substrate protective layer, and having an ejection port ejecting a liquid, and a liquid flow channel communicating with the liquid feeding port and the ejection port. The substrate protective layer comprises an ion scavenger.

Find Patent Forward Citations

Ishizuka, Kazunari. (2026). Liquid ejection head, and method for producing liquid ejection head (U.S. Patent No. 12766841). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12766841

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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