Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6132075 | Multichannel wave screw with a slush channel barrier section | John C. Medici, Jr., Stephen T. Takashima | 2000-10-17 |
| 5397526 | Method for reconfiguring finishing rolls in a plastic sheet fabrication sheetline | James H. Perkins, Charles C. Treisch, Jr., Howard E. Radel | 1995-03-14 |
| 5375992 | Triple channel wave screw | George A. Kruder | 1994-12-27 |
| 5219590 | Triple channel wave screw | George A. Kruder | 1993-06-15 |
| 4997358 | Apparatus for reconfiguring finishing rolls in a plastic sheet fabrication sheetline | James H. Perkins, Charles C. Treisch, Jr., Howard E. Radel | 1991-03-05 |