Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849458 | Segmented polyether polyurethane | Ian N. Askill, Willis W. Weber | 1989-07-18 |
| 4813966 | Biocompatible microporous polymeric materials and methods of making same | D. Keith Gilding, Ian N. Askill, Stephen G. Briana | 1989-03-21 |