Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5076296 | Carbon heat source | William S. Nystrom, Harry V. Lanzillotti, Charles R. Hayward, A. Clifton Lilly, Jr., John R. Hearn | 1991-12-31 |
| 4294438 | Replaceable liner for a crucible | William A. Nystrom, William A. Bauer | 1981-10-13 |