Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6346268 | Sustained release formulation containing three different types of polymers and tablet formed therefrom | Guohua Zhang, Muhammad Ali | 2002-02-12 |
| 6251430 | Water insoluble polymer based sustained release formulation | Guohua Zhang, Muhammad Ali | 2001-06-26 |
| 6083532 | Sustained release formulation containing three different types of polymers and tablet formed therefrom | Guohua Zhang, Muhammad Ali | 2000-07-04 |
| 5695781 | Sustained release formulation containing three different types of polymers | Guohua Zhang | 1997-12-09 |
| 5543099 | Process to manufacture micronized nifedipine granules for sustained release medicaments | Guohua Zhang | 1996-08-06 |