Process for manufacturing dosage form

Claim 2

An article of manufacture useful as a dosage form for dispensing a beneficial agent formulation, the article comprising: (a) a shaped wall comprising in at least a part a semipermeable composition permeable to the passage of an exterior fluid, the wall surrounding and forming: (b) a compartment comprising an internal empty space, a layer of a wax and a layer of a hydrogel; and, (c) means in the wall for communicating the exterior of the article of manufacture with the compartment.

Claim 3

An article of manufacture useful as a dosage form for dispensing a beneficial agent formulation, the article comprising: (a) shaped wall comprising in at least a part a semipermeable composition permeable to the passage of an exterior fluid, the wall surrounding and forming: (b) a compartment comprising a layer of wax and a layer of a hydrogel; and, (c) means in the wall for communicating the exterior of the article of manufacture with the compartment.

Claim 4

An article of manufacture useful as a dosage form for dispensing a beneficial agent formulation, the article comprising: (a) shaped wall comprising in at least a part a semipermeable composition permeable to the passage of an exterior fluid, the wall surrounding and forming: (b) a compartment comprising a layer of wax and a layer of a hydrogel; and, (c) means in the wall for communicating the exterior of the article of manufacture with the compartment.

Claim 5

A process for manufacturing a dispensing device provided with an internal empty space for receiving beneficial agent formulation, the process comprising: (a) forming a layer of wax; (b) surrounding the layer of wax with a wall comprising in at least a part a semipermeable composition; (c) forming at least one passageway in the wall connecting the exterior with the interior of the device; (d) heating the wax; and, (e) draining the wax through a passageway from the device, thereby providing an internal empty space in the device.

Claim 6

A process for manufacturing a dispensing device provided with an internal empty space for receiving beneficial agent formulation, the process comprising: (a) forming a layer of wax; (b) surrounding the layer of wax with a wall comprising in at least a part a semipermeable composition; (c) forming at least one passageway in the wall connecting the exterior with the interior of the device; (d) heating the wax; and, (e) draining the wax through a passageway from the device, thereby providing an internal empty space in the device.

Claim 7

A process for the manufacture of a dosage form provided with an internal space for receiving a beneficial agent formulation, the process comprising: (a) forming a layer of a hydrogel; (b) forming a layer of wax in contact with the hydrogel; (c) surrounding the layers with a wall comprising in at least a part a semipermeable composition; (d) forming at least one passageway in the wall connecting the exterior with the interior of the dosage form; (e) heating the dosage form to melt the wax; and, (f) draining the wax through a passageway from the dosage form to provide an internal empty space in the dosage form.

Claim 8

A process for the manufacture of a dosage form provided with an internal space for receiving a beneficial agent formulation, the process comprising: (a) forming a layer of a hydrogel; (b) forming a layer of wax in contact with the hydrogel; (c) surrounding the layers with a wall comprising in at least a part a semipermeable composition; (d) forming at least one passageway in the wall connecting the exterior with the interior of the dosage form; (e) heating the dosage form to melt the wax; and, (f) draining the wax through a passageway from the dosage form to provide an internal empty space in the dosage form.