Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865848 | Skin permeation enhancer compositions using sucrose esters | Yu-Ling Cheng, Robert M. Gale, Edna Sugihara | 1989-09-12 |
| 4820720 | Transdermal drug composition with dual permeation enhancers | Yu-Ling Cheng, David J. Enscore, Shari B. Libicki | 1989-04-11 |