Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5088546 | Vacuum-assisted counter gravity casting apparatus with valve to prevent flow of melt from mold | John G. Kubisch, James B. Mercer, Wilmer G. Schaeff | 1992-02-18 |
| 4862945 | Vacuum countergravity casting apparatus and method with backflow valve | James B. Mercer | 1989-09-05 |
| 4809767 | Countergravity casting apparatus | Karl D. Voss, James B. Mercer | 1989-03-07 |