SS

Steven W. Steinfield

HP HP: 49 patents #547 of 16,619Top 4%
📍 San Diego, CA: #665 of 23,606 inventorsTop 3%
🗺 California: #8,171 of 386,348 inventorsTop 3%
Overall (All Time): #56,767 of 4,157,543Top 2%
49
Patents All Time

Issued Patents All Time

Showing 26–49 of 49 patents

Patent #TitleCo-InventorsDate
6334661 System and method for inducing tensioning of a flexible nozzle member of an inkjet printer with an adhesive Joseph E. Scheffelin, William S. Colburn 2002-01-01
6332677 Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer Brian J. Keefe, Winthrop D. Childers, Donald G. Harris, Majid Azmoon 2001-12-25
6314660 Cascaded tensioning tangential drive for THA handling John A. Dangelewicz 2001-11-13
6244696 Inkjet print cartridge design for decreasing ink shorts by using an elevated substrate support surface to increase adhesive sealing of the printhead from ink penetration Hai Quang Tran, Ali Emamjomeh, Joseph E. Scheffelin 2001-06-12
6186622 Low expansion snout insert for inkjet print cartridge Andre Garcia 2001-02-13
6179414 Ink delivery system for an inkjet printhead Brian J. Keefe, Winthrop D. Childers, Paul H. McClelland, Kenneth E. Trueba 2001-01-30
5984464 Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer Brian J. Keefe, Winthrop D. Childers, Donald G. Harris, Majid Azmoon 1999-11-16
5953029 Ink delivery system for an inkjet printhead Brian J. Keefe, Winthrop D. Childers, Paul H. McClelland, Kenneth E. Trueba 1999-09-14
5946012 Reliable high performance drop generator for an inkjet printhead Kenneth J. Courian, John L. Stoffel, Richard A. Sader, Keshava A. Prasad, Steven L. Webb +4 more 1999-08-31
5874974 Reliable high performance drop generator for an inkjet printhead Kenneth J. Courian, John L. Stoffel, Richard A. Sader, Keshava A. Prasad, Steven L. Webb +4 more 1999-02-23
5648806 Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer Brian J. Keefe, Winthrop D. Childers, Donald G. Harris, Majid Azmoon 1997-07-15
5648805 Inkjet printhead architecture for high speed and high resolution printing Brian J. Keefe, May F. Ho, Kenneth J. Courian, Winthrop D. Childers, Ellen R. Tappon +4 more 1997-07-15
5648804 Compact inkjet substrate with centrally located circuitry and edge feed ink channels Brian J. Keefe, Winthrop D. Childers, Paul H. McClelland, Kenneth E. Trueba 1997-07-15
5638101 High density nozzle array for inkjet printhead Brian J. Keefe, May F. Ho, Kenneth J. Courian, Winthrop D. Childers, Ellen R. Tappon +4 more 1997-06-10
5635966 Edge feed ink delivery thermal inkjet printhead structure and method of fabrication Brian J. Keefe, Winthrop D. Childers, Paul H. McClelland, Kenneth E. Trueba, Duane Fasen +7 more 1997-06-03
5625396 Ink delivery method for an inkjet print cartridge Brian J. Keefe, Winthrop D. Childers, Paul H. McClelland, Kenneth E. Trueba 1997-04-29
5619236 Self-cooling printhead structure for inkjet printer with high density high frequency firing chambers Brian J. Keefe, May F. Ho, Kenneth J. Courian, Winthrop D. Childers, Ellen R. Tappon +4 more 1997-04-08
5604519 Inkjet printhead architecture for high frequency operation Brian J. Keefe, May F. Ho, Kenneth J. Courian, Winthrop D. Childers, Ellen R. Tappon +4 more 1997-02-18
5594481 Ink channel structure for inkjet printhead Brian J. Keefe, May F. Ho, Kenneth J. Courian, Winthrop D. Childers, Ellen R. Tappon +4 more 1997-01-14
5568171 Compact inkjet substrate with a minimal number of circuit interconnects located at the end thereof Brian J. Keefe, Winthrop D. Childers, W. Bruce Reid 1996-10-22
5563642 Inkjet printhead architecture for high speed ink firing chamber refill Brian J. Keefe, May F. Ho, Kenneth J. Courian, Winthrop D. Childers, Ellen R. Tappon +4 more 1996-10-08
5450113 Inkjet printhead with improved seal arrangement Winthrop D. Childers, Brian J. Keefe 1995-09-12
5420627 Inkjet printhead Brian J. Keefe, Winthrop D. Childers, Kenneth E. Trueba, Paul H. McClelland 1995-05-30
5278584 Ink delivery system for an inkjet printhead Brian J. Keefe, Winthrop D. Childers, Paul H. McClelland, Kenneth E. Trueba 1994-01-11