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 6689481 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 10, 2004

Filed:

Nov. 07, 2001
Applicant:
Inventors:

Kazunari Hamamura, Chuo-ku, JP;

Kengo Kobayashi, Nagoya, JP;

Hiroyoshi Sugawara, Anjo, JP;

Osamu Kasebe, Okazaki, JP;

Kazuhisa Uchiyama, Nagoya, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 1/504 ; B32B 1/520 ;
U.S. Cl.
CPC ...
B32B 1/504 ; B32B 1/520 ;
Abstract

An aluminum alloy heat exchanger resistive to impregnation of tobacco odor includes a base body of an aluminum alloy heat exchanger and an organic hydrophilic coating layer formed on the surface of the heat exchanger base body, and including a component (A) containing a chitosan compound selected from chitosan and derivatives thereof, and a component (B) containing a carboxylic compound having two or more carboxyl groups per molecule thereof, in a total solid amount of the components (A) and (B) of 20% by mass or more, based on the total amount by mass of the organic hydrophilic coating layer.


Find Patent Forward Citations

Hamamura, Kazunari. (2004). Aluminum alloy heat exchanger resistive to tobacco odor impregnation (U.S. Patent No. 6689481). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6689481

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