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 7493941 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 24, 2009

Filed:

Mar. 24, 2003
Applicants:

Hiraku Kawasaki, Sakai, JP;

Shinichirou Kobayashi, Sakai, JP;

Inventors:

Hiraku Kawasaki, Sakai, JP;

Shinichirou Kobayashi, Sakai, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F 19/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention reduces the expense of treating the surfaces of a plate material. This surface treatment method treats the surfaces of a plate material that is rolled with rolling oil and employed as a cooling fin of a heat exchanger, and includes a preparation step and a coating application step. In the preparation step, the plate material is prepared. In the coating application step, a coating is applied to the surface of the plate material without carrying out a degreasing treatment.


Find Patent Forward Citations

Kawasaki, Hiraku. (2009). Surface treatment method for plate material, and radiating fin for heat exchanger (U.S. Patent No. 7493941). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7493941

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