Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9511598 | Recirculation of ink | Robert Lee Wells, Bailey Smith, Marlene McDonald, William R. Letendre, Matthew Aubrey +2 more | 2016-12-06 |
| 9144993 | Recirculation of ink | Robert Lee Wells, Bailey Smith, Marlene McDonald, William R. Letendre, Matthew Aubrey +2 more | 2015-09-29 |
| 8752946 | Recirculation of ink | Robert Lee Wells, Bailey Smith, Marlene McDonald, William R. Letendre, Matthew Aubrey +2 more | 2014-06-17 |
| 8491076 | Fluid droplet ejection devices and methods | Paul A. Hoisington | 2013-07-23 |
| 8480196 | Method and apparatus to eject drops having straight trajectories | William R. Letendre, Xi Wang, Marlene McDonald, Jaan T. Laaspere | 2013-07-09 |
| 8459768 | High frequency droplet ejection device and method | Paul A. Hoisington, Deane A. Gardner, Steven H. Barss | 2013-06-11 |
| 8449058 | Method and apparatus to provide variable drop size ejection with low tail mass drops | — | 2013-05-28 |
| 8317284 | Method and apparatus to provide variable drop size ejection by dampening pressure inside a pumping chamber | William R. Letendre | 2012-11-27 |
| 8162466 | Printhead having impedance features | Andreas Bibl, John A. Higginson, Paul A. Hoisington, Deane A. Gardner, Melvin L. Biggs +1 more | 2012-04-24 |
| 8057003 | Method and apparatus to provide variable drop size ejection with a low power waveform | Samuel Darby | 2011-11-15 |
| 8025353 | Process and apparatus to provide variable drop size ejection with an embedded waveform | — | 2011-09-27 |
| 7988247 | Ejection of drops having variable drop size from an ink jet printer | William R. Letendre, Deane A. Gardner | 2011-08-02 |
| 7303264 | Printhead having a thin pre-fired piezoelectric layer | Andreas Bibl, John A. Higginson, Paul A. Hoisington, Deane A. Gardner, Melvin L. Biggs +1 more | 2007-12-04 |
| 7281778 | High frequency droplet ejection device and method | Paul A. Hoisington, Deane A. Gardner, Steven H. Barss | 2007-10-16 |
| 7052117 | Printhead having a thin pre-fired piezoelectric layer | Andreas Bibl, John A. Higginson, Paul A. Hoisington, Deane A. Gardner, Melvin L. Biggs +1 more | 2006-05-30 |
| 6886924 | Droplet ejection device | Paul A. Hoisington, Andreas Bibl | 2005-05-03 |