Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888241 | Low density composite opacifiers | George E. Melber | 1989-12-19 |
| 4843104 | Syntactic polymer foam compositions containing microsphere fillers | George E. Melber, William A. Oswald | 1989-06-27 |
| 4829094 | Thermoplastic microspheres | George E. Melber, William A. Oswald | 1989-05-09 |