Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4353726 | Method and apparatus for preheating pulverous materials prior to their introduction into a melting furnace | — | 1982-10-12 |
| 4330315 | Method and apparatus for preheating pulverous materials prior to their introduction into a melting furnace | Frederick J. Nelson, Raymond S. Richards | 1982-05-18 |
| 4303434 | Method and apparatus for preheating pulverous materials prior to their introduction into a melting furnace | Duane C. Nugent | 1981-12-01 |
| 4285718 | Method of operating tubular heat exchanger for preheating pulverous glass batch | Richard G. Mathias, John D. Novak, Owen M. Small, Sigmund Willinger | 1981-08-25 |