Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863856 | Weighted collagen microsponge for immobilizing bioactive materials | Robert C. Dean, Jr., Frederick H. Silver, Richard A. Berg, Peter W. Runstadler, Jr., Gennaro J. Maffia | 1989-09-05 |
| 4861714 | Weighted collagen microsponge for immobilizing bioactive material | Robert C. Dean, Jr., Frederick H. Silver, Richard A. Berg, Peter W. Runstadler, Jr. | 1989-08-29 |