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

David N. Nappier

TBThe Boeing: 4 patents #2,894 of 15,756Top 20%
Caseyville, IL: #6 of 18 inventorsTop 35%
Illinois: #21,447 of 84,256 inventorsTop 30%
Overall (All Time): #1,244,746 of 4,157,543Top 30%
4 Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7789167 Power assist lever arm attachment Scott Martin, Dustin D. Ribble 2010-09-07
7614832 Countersink drill system James Morrison, David L. Fritsche 2009-11-10
7363721 Countersink gauge having self-centering probe 2008-04-29
7189033 Apparatus and methods for thrust sensing valves David L. Fritsche, Scott Martin, Kenneth D. Harper 2007-03-13