Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5382267 | Method of reducing inorganic and organic sulfur in solid carbonaceous material prior to use of the solid carbonaceous material | Lazarin Lazarov | 1995-01-17 |
| 4590056 | Method of making carbon black having low ash content from carbonaceous materials | Wenjai R. Chen | 1986-05-20 |