WC

Winthrop D. Childers

HP HP: 14 patents #1 of 888Top 1%
📍 San Diego, CA: #2 of 925 inventorsTop 1%
🗺 California: #23 of 17,285 inventorsTop 1%
Overall (1997): #189 of 185,788Top 1%
14
Patents 1997

Issued Patents 1997

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
5699091 Replaceable part with integral memory for usage, calibration and other data Michael L. Bullock, B. Mark Hirst, Ronald D. Stephens, Jr., Antoni Gil Miquel 1997-12-16
5686949 Compliant headland design for thermal ink-jet pen David W. Swanson, Jaren D. Marler 1997-11-11
5685074 Method of forming an inkjet printhead with trench and backward peninsulas Yichuan Pan 1997-11-11
5673073 Syringe for filling print cartridge and establishing correct back pressure Joseph E. Scheffelin 1997-09-30
5648804 Compact inkjet substrate with centrally located circuitry and edge feed ink channels Brian J. Keefe, Steven W. Steinfield, Paul H. McClelland, Kenneth E. Trueba 1997-07-15
5648805 Inkjet printhead architecture for high speed and high resolution printing Brian J. Keefe, May F. Ho, Kenneth J. Courian, Steven W. Steinfield, Ellen R. Tappon +4 more 1997-07-15
5648806 Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer Steven W. Steinfield, Brian J. Keefe, Donald G. Harris, Majid Azmoon 1997-07-15
5637166 Similar material thermal tab attachment process for ink-jet pen David W. Swanson, Jaren D. Marler 1997-06-10
5638101 High density nozzle array for inkjet printhead Brian J. Keefe, May F. Ho, Kenneth J. Courian, Steven W. Steinfield, Ellen R. Tappon +4 more 1997-06-10
5635966 Edge feed ink delivery thermal inkjet printhead structure and method of fabrication Brian J. Keefe, Steven W. Steinfield, 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, Steven W. Steinfield, 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, Steven W. Steinfield, 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, Steven W. Steinfield, Ellen R. Tappon +4 more 1997-02-18
5594481 Ink channel structure for inkjet printhead Brian J. Keefe, May F. Ho, Kenneth J. Courian, Steven W. Steinfield, Ellen R. Tappon +4 more 1997-01-14