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AssigneeDimensional Foods Corporation
InventorEric Begleiter
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An edible product such as a unit dosage form of a pharmaceutically active substance includes a layer of a material that can receive and retain a high resolution microrelief that can convey information. The microrelief is themo-formable, preferably formed from an aqueous solution of HPMC and/or HPC plus a plasticizer and colorant. Other additives such as strengtheners, surfactants and adherents may be used depending on the application. The materials are selected and proportioned to control the fading or change in color of the visual image or effect produced by the relief to indicate exposure to an unacceptable degree of heat or humidity. The dosage form can be the relief-containing layer itself with the pharmaceutical carried therein. In a preferred form, the layer is an outer coating over a core containing the pharmaceutically active substance. Coated tablets are configured to resist twinning. To produce such dosage forms, the coated core is transported in unison with a flexible mold or transfer plate that can heat-replicate the microrelief on the outer layer of the dosage form, followed by a cooling and release of the transfer plate from the coating.
1-28. (canceled)
A method of producing a microrelief on an ingestible dosage form having a core which can contain a pharmaceutically active substance and a pharmaceutically acceptable carrier, comprising the steps of:
Apparatus for the continuous production of a hologram on an ingestible dosage form having a core which can contain a pharmaceutically active substance and which has been coated with a thin layer of a thermo-formable, comprising,
An edible product in dosage form comprising an active substance to be ingested and a material bearing a diffraction relief pattern, wherein said pattern is formed in said layer as an interference pattern produced by laser light.
A pharmaceutical dosage form according to claim 1, wherein said microrelief is formed in said layer as an interference pattern produced by laser light.
A method of producing an optical pattern on an outer surface of an edible article, where the optical pattern interacts with incident light to produce a visible image or effect, comprising the steps of:
Dependencies are inferred from the claim text.