Method for producing color cathode ray tube aperture masks

Details Method for producing color cathode ray tube aperture masks Method for producing color cathode ray tube aperture masks

1979-12-13

1981-08-25

McQuade, John

Metal working

Barrier layer or semiconductor device making

Barrier layer device making

H01J 2907

Patent

active

042851068

ABSTRACT:
In a process for preparing aperture mask assemblies for color cathode ray tubes, an improvement provides thicker, more adherent protective oxide coatings on the bimetallic mounting members of such assemblies by employing the step of mechanically roughening the surface of the mounting members prior to oxidation.

REFERENCES:
patent: 3351996 (1967-11-01), Fiore
patent: 3468005 (1969-09-01), Kautz
patent: 3621318 (1971-11-01), Lewinson
patent: 3693223 (1972-09-01), Kaplan
patent: 3722043 (1973-03-01), Kirchner
patent: 3765923 (1973-10-01), Bender-Christensen

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