Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shinichirou Kobayashi0
Hiraku Kawasaki0
Date of Patent
June 2, 2009
Patent Application Number
11765015
Date Filed
June 19, 2007
Patent Primary Examiner
Patent 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.
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