Controlled release article

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A - Human Necessities

61

M

128/104, 167/159

A61M 31/00 (2006.01) A61F 6/08 (2006.01) A61K 9/00 (2006.01)

Patent

CA 1076478

IMPROVED CONTROLLED RELEASE ARTICLE Robert G. Laughlin Thomas W. Gougeon ABSTRACT OF THE DISCLOSURE Controlled release articles which regulate the concentration of a surfactant compound at a useful level in an environment external to said articles are provided with a coating. The improved articles are especially useful in or on the bodies of animals, including humans, to provide immediate release of the coating and, thereafter, to provide controlled release of surfactants having biological activity, e.g., non-hormonal contraceptives.

267081

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