Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883669 | Transdermal absorption dosage unit for estradiol and other estrogenic steroids and process for administration | Chia-Shun Lee, Kirti H. Valia, Te-Yen Chien | 1989-11-28 |
| 4818540 | Transdermal fertility control system and process | Te-Yen Chien, Yih-Chain Huang | 1989-04-04 |
| 4806341 | Transdermal absorption dosage unit for narcotic analgesics and antagonists and process for administration | Chin-Chih Chiang, Kabuji Tojo | 1989-02-21 |