Issued Patents 1997
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648388 | Method of using methyllactic acid for treating wrinkles | Ruey J. Yu | 1997-07-15 |
| 5643962 | Method of using glucoleptonic acid for treating wrinkles | Ruey J. Yu | 1997-07-01 |
| 5643963 | Method of using isocitric acid for treating wrinkles | Ruey J. Yu | 1997-07-01 |
| 5643961 | Method of using malic acid for treating wrinkles | Ruey J. Yu | 1997-07-01 |
| 5643953 | Method of using 3-phenyllactic acid for treating wrinkles | Ruey J. Yu | 1997-07-01 |
| 5643952 | Method of using 2-phenyllactic acid for treating wrinkles | Ruey J. Yu | 1997-07-01 |
| 5643949 | Phenyl alpha acyloxyalkanoic acids, derivatives and their therapeutic use | Ruey J. Yu | 1997-07-01 |
| 5641475 | Antiodor, antimicrobial and preservative compositions and methods of using same | Ruey J. Yu | 1997-06-24 |
| 5637615 | Method of using tropic acid for treating wrinkles | Ruey J. Yu | 1997-06-10 |
| 5621006 | Method for treating acne using benzilic acid | Ruey J. Yu | 1997-04-15 |
| 5612376 | Method of treating wrinkles using 3-phenyllactic acid | Ruey J. Yu | 1997-03-18 |
| 5599843 | Method of treating wrinkles using 2-phenyllactic acid | Ruey J. Yu | 1997-02-04 |
| 5591774 | Method of treating wrinkles using malic acid | Ruey J. Yu | 1997-01-07 |