Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5746914 | Honey comb filter assembly and method of making the same | Scott Hanna | 1998-05-05 |
| 4658886 | High temperature molds and composition for same | Walter H. Carlson | 1987-04-21 |
| 4556097 | Mold plug and method for sealing an ingot mold | — | 1985-12-03 |
| 4536379 | Production of silicon carbide | Walter H. Carlson, Gerald B. Zander, George C. Hanna | 1985-08-20 |