Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5033948 | Induction melting of metals without a crucible | Thomas S. Piwonka, John T. Berry | 1991-07-23 |
| 5014769 | Induction melting of metals without a crucible | Thomas S. Piwonka, John T. Berry | 1991-05-14 |
| 4909836 | Apparatus and a method for improved filtration of inclusions from molten metal | — | 1990-03-20 |