Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DM

David K. McElfresh

Oracle: 45 patents #111 of 14,854Top 1%
HP: 11 patents #1,895 of 16,619Top 15%
San Diego, CA: #552 of 23,606 inventorsTop 3%
California: #6,332 of 386,348 inventorsTop 2%
Overall (All Time): #43,034 of 4,157,543Top 2%
57 Patents All Time

Issued Patents All Time

Showing 51–57 of 57 patents

Patent #TitleCo-InventorsDate
6719398 Inkjet printing with air movement system Satya Prakash, Naoto Kawamura 2004-04-13
6705705 Substrate for fluid ejection devices Janis Horvath, Brian J. Keefe, Joseph E. Scheffelin, Mohammad Akhavain, Noah Lassar 2004-03-16
6575559 Joining of different materials of carrier for fluid ejection devices Mohammad Akhavain, Joseph E. Scheffelin, Gerald V. Rapp, Janis Horvath 2003-06-10
6557976 Electrical circuit for wide-array inkjet printhead assembly Noah Lassar, Mohammad Akhavain, Brian J. Keefe, Joseph E. Scheffelin, Janis Horvath +1 more 2003-05-06
6520624 Substrate with fluid passage supports Janis Horvath, Mohammad Akhavin, Joseph E. Scheffelin, Brian J. Keefe, Pere Esterri 2003-02-18
6409307 Coplanar mounting of printhead dies for wide-array inkjet printhead assembly Mohammad Akhavain, Robert-Scott Melendrino Lopez, Dale Timm, Janis Horvath, Noah Lassar +2 more 2002-06-25
5514627 Method and apparatus for improving the performance of light emitting diodes Christopher H. Lowery, Steve Burchet, Douglas B. Adolf, James Martin 1996-05-07