Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654357 | Dispersible carbonblack pellets | Robert C. Reid | 1997-08-05 |
| 5622557 | Mineral binders colored with silicon-containing carbon black | Khaled Mahmud, James A. Belmont, Ralph Ulrich Boes | 1997-04-22 |