Metal articles with smooth surface having durable visible...

Details Metal articles with smooth surface having durable visible... Metal articles with smooth surface having durable visible...

2005-05-24

2005-05-24

Koehler, Robert R. (Department: 1775)

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Forming nonmetal coating

C205S325000, C205S328000, C205S687000, C427S331000, C427S444000, C428S687000, C428S457000, C428S927000

Reexamination Certificate

active

06896787

ABSTRACT:
Metal articles having a durable visible marking on a smooth Type III hard anodized surface particularly useful for shock absorber tubes are produced by applying an alkaline solution to the anodized surface for not less than about 15 seconds at temperature of 100°-140° F.; applying a pattern of lacquer based solvent ink to said surface; and sealing the applied pattern by applying a liquid selected from the group consisting of nickel acetate, cobalt acetate and boiling water to said pattern.

REFERENCES:
patent: 4201821 (1980-05-01), Fromson et al.

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