Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4961082 | Deaeration of ink in an ink jet system | Paul A. Hoisington, Charles W. Spehrley, Jr. | 1990-10-02 |
| 4940995 | Removal of dissolved gas from ink in an ink jet system | Robert Lee Wells | 1990-07-10 |
| 4937598 | Ink supply system for an ink jet head | Paul A. Hoisington, Charles W. Spehrley, Jr., Melvin L. Biggs, Richard Carden | 1990-06-26 |
| 4864330 | Method of forming a hot melt ink unit | Linda T. Creagh, Charles W. Spehrley, Jr., Dean H. Cranston, Jack B. MacDonald | 1989-09-05 |
| 4814786 | Hot melt ink supply system | Paul A. Hoisington, Charles W. Spehrley, Jr. | 1989-03-21 |
| 4788556 | Deaeration of ink in an ink jet system | Paul A. Hoisington, Charles W. Spehrley, Jr. | 1988-11-29 |