Issued Patents All Time
Showing 101–125 of 129 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5554651 | Method of treating wrinkles using citramalic acid | Ruey J. Yu | 1996-09-10 |
| 5550154 | Method of treating wrinkles using glucuronic acid or glucuronolactone | Ruey J. Yu | 1996-08-27 |
| 5550158 | Method of treating wrinkles using glucoheptonic acid | Ruey J. Yu | 1996-08-27 |
| 5547988 | Alleviating signs of dermatological aging with glycolic acid, lactic acid or citric acid | Ruey J. Yu | 1996-08-20 |
| 5492935 | Compositions comprising retinal and derivatives thereof for treatment of cosmetic or dermatologic skin disorders | Ruey J. Yu | 1996-02-20 |
| 5470880 | Method of using citric acid for the treatment of wrinkles | Ruey J. Yu | 1995-11-28 |
| 5422370 | Method of using 2-hydroxypropanoic acid (lactic acid) for the treatment of wrinkles | Ruey J. Yu | 1995-06-06 |
| 5389677 | Method of treating wrinkles using glycalic acid | Ruey J. Yu | 1995-02-14 |
| 5385938 | Method of using glycolic acid for treating wrinkles | Ruey J. Yu | 1995-01-31 |
| 5258391 | Phenyl alpha acyloxyalkanoic acids, derivatives and their therapeutic use | Ruey J. Yu | 1993-11-02 |
| 5093360 | Retinal, derivatives and their therapeutic use | Ruey J. Yu | 1992-03-03 |
| 5091171 | Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use | Ruey J. Yu | 1992-02-25 |
| 4518789 | Phenyl alpha-acyloxyacetamide derivatives and their therapeutic use | Ruey J. Yu | 1985-05-21 |
| 4380549 | Topical treatment of dry skin | Ruey J. Yu | 1983-04-19 |
| 4367224 | Stable dithranol compositions in anhydrous vehicles | Ruey J. Yu | 1983-01-04 |
| 4363815 | Alpha hydroxyacids, alpha ketoacids and their use in treating skin conditions | Ruey J. Yu | 1982-12-14 |
| 4361571 | 3-Carbamoyl-6-aminopyridinium and analogues, and their use in treating skin disorders | Ruey J. Yu | 1982-11-30 |
| 4316902 | Therapeutic compositions and vehicles for topical pharmaceuticals | Ruey J. Yu | 1982-02-23 |
| 4287214 | Dithranol compositions stabilized with alpha hydroxyacids | Ruey J. Yu | 1981-09-01 |
| 4284630 | Stabilized water-in-oil emulsions | Ruey J. Yu | 1981-08-18 |
| 4283386 | Method for hair care | Ruey J. Yu | 1981-08-11 |
| 4258052 | Treatment of psoriasis with nicotinamide analogues | Ruey J. Yu | 1981-03-24 |
| 4252796 | Stable water-in-oil emulsions | Ruey J. Yu | 1981-02-24 |
| 4246261 | Additives enhancing topical corticosteroid action | Ruey J. Yu | 1981-01-20 |
| 4234599 | Treatment of skin keratoses with .alpha.-hydroxy acids and related compounds | Ruey J. Yu | 1980-11-18 |