Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5955109 | Methods and compositions for topical delivery of retinoic acid | Martin Katz, Chung-Heng Cheng, Sergio Nacht | 1999-09-21 |
| 5871722 | Ionic beads useful for controlled release and adsorption | Sergio Nacht, Martin Katz, Tai C. Cheng, Christine Liau, Robert Eury +1 more | 1999-02-16 |
| 5840293 | Ionic beads for controlled release and adsorption | Sergio Nacht, Martin Katz, Tai C. Cheng, Christine Liau, Robert Eury +1 more | 1998-11-24 |
| 5145675 | Two step method for preparation of controlled release formulations | — | 1992-09-08 |
| 4690825 | Method for delivering an active ingredient by controlled time release utilizing a novel delivery vehicle which can be prepared by a process utilizing the active ingredient as a porogen | — | 1987-09-01 |
| 4307201 | Highly adsorptive macroporous polymers | Robert Zajac | 1981-12-22 |