Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8602198 | Vacuum roll and method of use | Joseph Daniel Coenen, Gregory J. Rajala | 2013-12-10 |
| 5859482 | Liquid cooled electric motor frame | James R. Crowell, Matthew Doctor, Timothy K. Marker, Darrell R. Sontag, Ajoy K. Basu | 1999-01-12 |
| 4435693 | Electrical insulating refractory composition | — | 1984-03-06 |
| 4415674 | Electrical insulating refractory composition | — | 1983-11-15 |
| 4291201 | Push-button dial assembly for telephones | Gary M. Petaja | 1981-09-22 |
| 4231995 | Ammonia double-alkali process for removing sulfur oxides from stack gases | Ivor E. Campbell, James M. Henderson, William H. Wetherill | 1980-11-04 |