Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8323376 | Lead recycling | Vega Petrova Kotzeva, Seref Sonmez | 2012-12-04 |
| 6309534 | Apparatus and method for measuring the composition of gases using ionically conducting electrolytes | Derek John Fray | 2001-10-30 |
| 5192404 | Method for measuring a minor element in a molten metal | Derek John Fray | 1993-03-09 |