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

David R. Legg

CSCharm Sciences: 1 patents #23 of 42Top 55%
Amesbury, MA: #106 of 166 inventorsTop 65%
Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #3,094,323 of 4,157,543Top 75%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8663975 Method and apparatus for reducing luminescent test result intereferences (continuation) Stanley E. Charm, Richard T. Skiffington, Robert J. Markovsky 2014-03-04