Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6139137 | Bottom fill inkjet cartridge through bubble generator | Ralph L. Stathem, John Dunn, Christopher P. Murschel, Lowell R. McDaniel, David Erickson +3 more | 2000-10-31 |
| 5933175 | Bottom fill inkjet cartridge through bubble generator | Ralph L. Stathem, John Dunn, Christopher P. Murschel, Lowell R. McDaniel, David Erickson +3 more | 1999-08-03 |