Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6431683 | Hybrid carrier for wide-array inkjet printhead assembly | Joseph E. Scheffelin, Mohammad Akhavain, Brian J. Keefe, Janis Horvath | 2002-08-13 |
| 5648805 | Inkjet printhead architecture for high speed and high resolution printing | Brian J. Keefe, Kenneth J. Courian, Steven W. Steinfield, Winthrop D. Childers, Ellen R. Tappon +4 more | 1997-07-15 |
| 5638101 | High density nozzle array for inkjet printhead | Brian J. Keefe, Kenneth J. Courian, Steven W. Steinfield, Winthrop D. Childers, Ellen R. Tappon +4 more | 1997-06-10 |
| 5619236 | Self-cooling printhead structure for inkjet printer with high density high frequency firing chambers | Brian J. Keefe, Kenneth J. Courian, Steven W. Steinfield, Winthrop D. Childers, Ellen R. Tappon +4 more | 1997-04-08 |
| 5604519 | Inkjet printhead architecture for high frequency operation | Brian J. Keefe, Kenneth J. Courian, Steven W. Steinfield, Winthrop D. Childers, Ellen R. Tappon +4 more | 1997-02-18 |
| 5594481 | Ink channel structure for inkjet printhead | Brian J. Keefe, Kenneth J. Courian, Steven W. Steinfield, Winthrop D. Childers, Ellen R. Tappon +4 more | 1997-01-14 |
| 5563642 | Inkjet printhead architecture for high speed ink firing chamber refill | Brian J. Keefe, Kenneth J. Courian, Steven W. Steinfield, Winthrop D. Childers, Ellen R. Tappon +4 more | 1996-10-08 |
| 5463413 | Internal support for top-shooter thermal ink-jet printhead | Ellen R. Tappon | 1995-10-31 |
| 5109234 | Printhead warming method to defeat wait-time banding | David R. Otis, Jr. | 1992-04-28 |