Process for removal of magnetic coatings from computer memory discs

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United States of America Patent

PATENT NO 4439289
SERIAL NO

06280738

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Removal of magnetic coatings from computer memory discs is achieved by immersing the discs in a bath of a sulphuric-acid and glycerine solution while applying an electrical potential between electrodes in the bath, one of which is the disc itself. After removal of the disc from the sulphuric-acid glycerine solution, it is sequentially immersed in alcohol and then water; any remaining coating is next mechanically removed and then the disc is immersed in high purity water and dried.

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Patent Owner(s)

Patent OwnerAddress
SANDERS ASSOCIATES INCDANIEL WEBSTER HIGHWAY SOUTH A CORP OF DE NASHUA NH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Viglione, Gaetano T Amesbury, MA 1 6

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