Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5955109 | Methods and compositions for topical delivery of retinoic acid | Richard Won, Chung-Heng Cheng, Sergio Nacht | 1999-09-21 |
| 5879716 | Methods and compositions for topical delivery of benzoyl peroxide | Chung-Heng Cheng, Sergio Nacht | 1999-03-09 |
| 5871722 | Ionic beads useful for controlled release and adsorption | Sergio Nacht, Richard Won, Tai C. Cheng, Christine Liau, Robert Eury +1 more | 1999-02-16 |
| 5840293 | Ionic beads for controlled release and adsorption | Sergio Nacht, Richard Won, Tai C. Cheng, Christine Liau, Robert Eury +1 more | 1998-11-24 |
| 5458890 | Methods and compositions for flavoring orally-delivered products | John H. Williford, Sergio Nacht, Chung-Heng Cheng, Rajesh A. Patel, Brian J. Picard | 1995-10-17 |
| 5156843 | Fabric impregnated with functional substances for controlled release | Helen Leong, Chung-Heng Cheng | 1992-10-20 |
| 5135740 | Porous particles in preparations involving immiscible phases | Chung-Heng Cheng | 1992-08-04 |
| 5073365 | Clinical and personal care articles enhanced by lubricants and adjuvants | Helen Leong, Chung-Heng Cheng | 1991-12-17 |
| 5028435 | System and method for transdermal drug delivery | Sergio Nacht, Jorge Heller | 1991-07-02 |
| 4855144 | Synthetic melanin aggregates | Helen Leong, Ann Delk, Sergio Nacht, David L. Berliner | 1989-08-08 |
| 4806360 | Synthetic melanin aggregates | Helen Leong, Anne Delk, David L. Berliner, Sergio Nacht | 1989-02-21 |
| D299819 | Guard for preventing automobile dents | Timothy L. Corsini | 1989-02-14 |