Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10696855 | Low toxicity ink formulations with improved printhead lifetime | Jognandan Prashar, Iain Blake | 2020-06-30 |
| 9725609 | Ink formulations for improving printhead lifetime | Jognandan Prashar, Doreen Bali | 2017-08-08 |
| 9546292 | Ink additive combinations for improving printhead lifetime | David Tyvoll, Simon Fielder, Michele Gimona, Christopher Barton, Jognandan Prashar +3 more | 2017-01-17 |
| 9388317 | Ink formulations for improving printhead lifetime | Jognandan Prashar, Doreen Bali | 2016-07-12 |
| 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, Frank Drogo, Leonard Slevin +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, Frank Drogo, Leonard Slevin +2 more | 1998-04-28 |
| 5416145 | Aqueous anionic dye based ink jet inks | Ronald A. Askeland, Sheau-Hwa Ma, Howard Matrick | 1995-05-16 |
| 5221334 | Aqueous pigmented inks for ink jet printers | Sheau-Hwa Ma, Howard Matrick, Arthur C. Shor, Harry J. Spinelli, Jerome Hochberg | 1993-06-22 |
| 5180425 | Aqueous ink jet inks containing polyol/alkylene oxide condensates as cosolvents | Howard Matrick, Young S. You | 1993-01-19 |