Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5976435 | Method and apparatus for producing composite materials | Tobin Djerf | 1999-11-02 |
| 5660282 | Method and apparatus for separating resource materials from solid waste | Tobin Djerf | 1997-08-26 |
| 5649785 | Method of treating solid waste, recovering the constituent materials for recycling and reuse, and producing useful products therefrom | Tobin Djerf | 1997-07-22 |
| 5341935 | Method of separating resource materials from solid waste | Tobin Djerf | 1994-08-30 |