Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5981672 | Apparatus and method for converting polyethylene terephthalate into polyester polyols | — | 1999-11-09 |
| 4441697 | Silver recovery unit | Michael Lee Butts | 1984-04-10 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5981672 | Apparatus and method for converting polyethylene terephthalate into polyester polyols | — | 1999-11-09 |
| 4441697 | Silver recovery unit | Michael Lee Butts | 1984-04-10 |