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. 22, 2022
Filed:
Dec. 18, 2019
Uacj Corporation, Tokyo, JP;
Uacj Extrusion Corporation, Tokyo, JP;
Denso Corporation, Kariya, JP;
Shinichi Nakamura, Tokyo, JP;
Naoki Yamashita, Tokyo, JP;
Seiichi Nagao, Nagoya, JP;
Satoshi Shibata, Tokyo, JP;
Kazuhisa Naitou, Kariya, JP;
Takeshi Okinotani, Kariya, JP;
Susumu Ichikawa, Kariya, JP;
Akira Itoh, Kariya, JP;
Abstract
In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tubeformed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portionat least in a part of an inner circumferential portion in each of the plurality of flow passages