Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5601631 | Process for treating metal oxide fines | Franklin G. Rinker | 1997-02-11 |
| 5601692 | Process for treating noncaking coal to form passivated char | Franklin G. Rinker, Dennis W. Coolidge, Ernest P. Esztergar | 1997-02-11 |