Controlled Release Multiple Layer Coatings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Oct 30, 2008
app pub date -
Apr 24, 2007
filing date -
Apr 24, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A process for making controlled release pharmaceutical formulations is provided, which comprises supplying a plurality of solutions with syringe pumps for fluid bed coating, coating a substrate with a pH dependent soluble polymer solution, coating the polymer coated substrate with at least one layer of a solution of a therapeutically active substance and at least one layer of a second polymer solution, and alternating the layers so that the number, order, and volume of the layers controls the release of the therapeutically active substance. In alternate embodiments, the consecutively applied layers may contain coating materials, active ingredients or a mixture of coating materials and active ingredients; the layers can be applied in varying order. Also provided is a system for applying the coatings, wherein the syringe pumps are controlled by a computer in accordance with predetermined instructions.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully