Release rate adjustment of osmotic or diffusional delivery devices
US4865845A · kind A · utility
247Cited by
20References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1987 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Aug 28, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0004
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A sleeve shaped structure covers a portion of the transport area of a diffusional or osmotic delivery device. The structure is durable and inert to the use environment. Markings on the structure indicate where breaking or cutting will produce a predictable alteration in delivery rate. Among other attachment means, a water soluble adhesive maintains the structure on the delivery device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.