Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859780 | Hydrophilic modifier monomers | J. Richard Robertson, Kai C. Su | 1989-08-22 |
| 4857606 | Wettable, flexible, oxygen permeable, substantially non-swellable contact lens containing polyoxyalkylene backbone units, and use thereof | Kai C. Su | 1989-08-15 |