Sustained-release theophylline tablet
US6426091B1 · kind B1 · utility
29Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Mar 21, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5047
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A theophylline sustained release tablet obtained by coating core granules composed mainly of theophylline with a layer of a coating film composed of a hydrophobic material and a plastic excipient and optionally containing an enteric polymer material to form coated granules and then by compressing the coated granules together with a disintegrating excipient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.