Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296230 | Transdermal fertility control system and process | Yie W. Chien, Te-Yen Chien | 1994-03-22 |
| 4906169 | Transdermal estrogen/progestin dosage unit, system and process | Yie W. Chien, Te-Yen Chien | 1990-03-06 |
| 4818540 | Transdermal fertility control system and process | Yie W. Chien, Te-Yen Chien | 1989-04-04 |