Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6799441 | Furnaces for fused silica production | Floyd E. Marley, Daniel R. Sempolinski | 2004-10-05 |
| 6698248 | Methods and furnaces for fused silica production | Floyd E. Marley, Daniel R. Sempolinski | 2004-03-02 |
| 6672111 | Method and apparatus for adding metals to fused silica | William Peters, Daniel R. Sempolinski, Michael H. Wasilewski | 2004-01-06 |