Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090350 | System for separating constituents from a base material | Stephen M. Birken | 2000-07-18 |
| 5997607 | Process of condensing metal in condensation chamber | Stephen M. Birken | 1999-12-07 |
| 5784682 | System for separating constituents from a base material | Stephen M. Birken | 1998-07-21 |
| 5024740 | Mineral refinement by high RF energy application | Stephen M. Birken | 1991-06-18 |
| 4894134 | Mineral refinement by high RF energy application | Stephen M. Birken | 1990-01-16 |