Issued Patents All Time
Showing 51–75 of 129 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677340 | Method of using gluconic acid or gluconolactone for treating wrinkles | Ruey J. Yu | 1997-10-14 |
| 5677339 | Method of using mandelic acid for treating wrinkles | Ruey J. Yu | 1997-10-14 |
| 5674903 | Method of using citric acid for treating wrinkles | Ruey J. Yu | 1997-10-07 |
| 5674899 | Method of using lactic acid for treating wrinkles | Ruey J. Yu | 1997-10-07 |
| 5670543 | Method of using pantoic acid or pantolactone for treating wrinkles | Ruey J. Yu | 1997-09-23 |
| 5670542 | Method of using glucuronic acid or glucronolactone for treating wrinkles | Ruey J. Yu | 1997-09-23 |
| 5670541 | Method of treating wrinkles using gulonic acid or gulonolactone | Ruey J. Yu | 1997-09-23 |
| 5668177 | Method of treating wrinkles using tartaric acid | Ruey J. Yu | 1997-09-16 |
| 5665776 | Additives enhancing topical actions of therapeutic agents | Ruey J. Yu | 1997-09-09 |
| 5656666 | Method of using ribonic acid or ribonolactone for treating wrinkles | Ruey J. Yu | 1997-08-12 |
| 5656665 | Method of using quinic acid or quinolactone for treating wrinkles | Ruey J. Yu | 1997-08-12 |
| 5654340 | Method of using gulonic acid or gulonolactone for treating wrinkles | Ruey J. Yu | 1997-08-05 |
| 5654336 | Methods of using glycolic acid for reversing or retarding the effect of aging on human facial skin | Ruey J. Yu | 1997-08-05 |
| 5652267 | Method of using saccharic acid or saccharolactone for treating wrinkles | Ruey J. Yu | 1997-07-29 |
| 5650437 | Method of using benzilic acid for treating wrinkles | Ruey J. Yu | 1997-07-22 |
| 5650436 | Method of using galactonic acid or galactonolactone for treating wrinkles | Ruey J. Yu | 1997-07-22 |
| 5650440 | Method of using citramalic acid for treating wrinkles | Ruey J. Yu | 1997-07-22 |
| 5648395 | Method of using tartaric acid for treating wrinkles | Ruey J. Yu | 1997-07-15 |
| 5648391 | Method of using galacturonic acid or galacturonolactone for treating wrinkles | Ruey J. Yu | 1997-07-15 |
| 5648388 | Method of using methyllactic acid for treating wrinkles | Ruey J. Yu | 1997-07-15 |
| 5643953 | Method of using 3-phenyllactic 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 |
| 5643962 | Method of using glucoleptonic 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 |
| 5643952 | Method of using 2-phenyllactic acid for treating wrinkles | Ruey J. Yu | 1997-07-01 |