Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8883196 | Transdermal hormone delivery system: compositions and methods | — | 2014-11-11 |
| 8221784 | Transdermal hormone delivery system: compositions and methods | — | 2012-07-17 |
| 8221785 | Transdermal hormone delivery system: compositions and methods | — | 2012-07-17 |
| 7384650 | Skin permeation enhancement composition for transdermal hormone delivery system | — | 2008-06-10 |
| 7045145 | Transdermal contraceptive delivery system and process | — | 2006-05-16 |
| 5788983 | Transdermal controlled delivery of pharmaceuticals at variable dosage rates and processes | Yie W. Chien, Guo-Shen Chen | 1998-08-04 |
| 5762956 | Transdermal contraceptive delivery system and process | Yie W. Chien, Sai-Jun Gong | 1998-06-09 |
| 5296230 | Transdermal fertility control system and process | Yie W. Chien, Yih-Chain Huang | 1994-03-22 |
| 5145682 | Transdermal absorption dosage unit for postmenopausal syndrome treatment and process for administration | Yie W. Chien | 1992-09-08 |
| 5023084 | Transdermal estrogen/progestin dosage unit, system and process | Yie W. Chien | 1991-06-11 |
| 4906169 | Transdermal estrogen/progestin dosage unit, system and process | Yie W. Chien, Yih-Chain Huang | 1990-03-06 |
| 4883669 | Transdermal absorption dosage unit for estradiol and other estrogenic steroids and process for administration | Yie W. Chien, Chia-Shun Lee, Kirti H. Valia | 1989-11-28 |
| 4818540 | Transdermal fertility control system and process | Yie W. Chien, Yih-Chain Huang | 1989-04-04 |