Process for treating metal surfaces

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9234283
APP PUB NO 20080280046A1
SERIAL NO

12029729

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Abstract

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The corrosion resistance of a metal substrate surface treated with an acidic aqueous composition to form a conversion coating is improved by first contacting the surface with an oxidizing acidic pre-rinse, such as an aqueous solution of nitric acid and hydrogen peroxide, or nitric acid and hydrofluoric acid, or Fe+3 cations and hydrofluoric acid.

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Patent Owner(s)

Patent OwnerAddress
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN (HENKEL KGAA)TFP/PATENTABTEILUNG DUESSELDORF D-401

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bryden, Todd R Midland, US 13 161
Goodreau, Bruce Romeo, US 4 48
Kapic, Edis Sterling Heights, US 10 51
Liang, Jeng-Li Auburn Hills, US 11 121
Liu, Jianping South Glastonbury, US 43 91
Zimmerman, John Taylor, US 59 5715

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