Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824901 | Surface treated absorbent polymers | William Alexander, Barbara R. Regan | 1989-04-25 |
| 4820773 | Water absorbent resins prepared by polymerization in the presence of styrene-maleic anhydride copolymers | William Alexander, Barbara R. Regan | 1989-04-11 |