Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252690 | Superabsorbent polymers | Henry L. Hsieh | 1993-10-12 |
| 5250642 | Copolymers of ampholytic ion pairs containing vinylic tertiary amine and olefinic comonomers | Henry L. Hsieh | 1993-10-05 |
| 5243008 | Grafted copolymers highly absorbent to aqueous electrolyte solutions | Henry L. Hsieh | 1993-09-07 |
| 5239002 | Polymeric adhesive and anti-corrosion agents | Timothy W. Johnson, Henry L. Hsieh | 1993-08-24 |
| 5225506 | Superabsorbent polymers | Henry L. Hsieh | 1993-07-06 |
| 5219970 | Grafted copolymers highly absorbent to aqueous electrolyte solutions | Henry L. Hsieh | 1993-06-15 |
| 5216098 | Superabsorbent crosslinked ampholytic ion pair copolymers | Henry L. Hsieh | 1993-06-01 |
| 5214117 | Grafted copolymers highly absorbent to aqueous electrolyte solutions | Henry L. Hsieh | 1993-05-25 |
| 5206326 | Grafted copolymers highly absorbent to aqueous electrolyte solutions | Henry L. Hsieh | 1993-04-27 |
| 5130389 | Superabsorbent crosslinked ampholytic ion pair copolymers containing 2-methacryloyloxyethyldimethylammonium | Henry L. Hsieh | 1992-07-14 |
| 5130391 | Superabsorbent crosslinked ampholytic ion pair copolymers | Henry L. Hsiehp | 1992-07-14 |
| 5110887 | Superabsorbent crosslinked ampholytic ion pair copolymers | Henry L. Hsieh | 1992-05-05 |
| 5106929 | Superabsorbent crosslinked ampholytic ion pair copolymers | Henry L. Hsieh | 1992-04-21 |
| 5098970 | Superabsorbent crosslinked ampholytic ion pair copolymers | Henry L. Hsieh | 1992-03-24 |
| 5075399 | Superabsorbent crosslinked ampholytic ion pair copolymers | Henry L. Hsieh | 1991-12-24 |