Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6102998 | Ink-jet inks and method for printing the same | Kai-Kong Iu, William A. Houle | 2000-08-15 |
| 5880758 | Printer with pen containing a low dot spread black ink and a high dot spread color ink | John L. Stoffel, Keshava A. Prasad, Ronald A. Askeland, Michele Shepard, Frank Drogo +2 more | 1999-03-09 |
| 5745140 | Color ink-jet printer with pigment black and dye-based color inks | John L. Stoffel, Keshava A. Prasad, Ronald A. Askeland, Michele Shepard, Frank Drogo +2 more | 1998-04-28 |
| 5356464 | Aqueous ink compositions containing anti-curl agents | Mark Hickman, Loren E. Johnson, John L. Stoffel, Ronald A. Askeland, Catherine B. Hunt +4 more | 1994-10-18 |
| 5112399 | Plain paper inks | Mark S. Hickman | 1992-05-12 |