Dosage form with a core tablet of active ingredient sheathed in a compressed annular body of powder or granular material, and process and tooling for producing it
US7611722B2 · kind B2 · utility
15Cited by
75References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2003 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B11/34
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A solid dosage form for oral administration to a patient comprising a core tablet sheathed in an annular body of compressed powder or granular material is provided. A preferred embodiment of the solid dosage form reduces contact of the active ingredient in solid form with the mucosa lining the gastrointestinal tract, which is particularly advantageous for delivering an ulcerative drug. A tool set comprising a columnar punch and a punch assembly comprising an annular punch and core rod, and a tableting process for making the solid dosage form are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.