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

David E. Nichols

CLCompass Pathfinder Limited: 14 patents #1 of 26Top 4%
PFPurdue Research Foundation: 9 patents #110 of 3,174Top 4%
UHUniversity Of North Carolina At Chapel Hill: 5 patents #130 of 1,688Top 8%
UCUniversity Of North Carolina: 1 patents #81 of 213Top 40%
Chapel Hill, NC: #118 of 1,999 inventorsTop 6%
North Carolina: #1,509 of 45,564 inventorsTop 4%
Overall (All Time): #142,391 of 4,157,543Top 4%
27 Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #TitleCo-InventorsDate
5420134 Substituted hexahydrobenzo[A]phenanthridines Richard Mailman 1995-05-30
5047536 Hexahydrobenzo(A)phenanthridine compounds 1991-09-10