Method for forming surface-treating film

Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...

Reexamination Certificate

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Reexamination Certificate

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07625476

ABSTRACT:
This invention relates to a method for forming on a metal substrate a surface treating film excelling in corrosion resistance and stability of film-forming agent, by applying a film-forming agent by a multistage electrification system comprising at least two stages.

REFERENCES:
patent: 2004/0244874 (2004-12-01), Nakayama et al.
patent: 2008/0254283 (2008-10-01), Shimoda
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patent: 2006/109862 (2006-10-01), None

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