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

Patrick Charles

DEDigital Equipment: 1 patents #1,005 of 2,100Top 50%
SASolvay (Société Anonyme): 1 patents #174 of 437Top 40%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
Maynard, MA: #103 of 250 inventorsTop 45%
Massachusetts: #33,482 of 88,656 inventorsTop 40%
Overall (All Time): #1,588,075 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7235282 Method of treating the surface of an aged PVC object Michel Tchapian, Xavier Coudry, Pierre Lomenech, Richard Thommeret 2007-06-26
5602941 Input modification system for multilevel dithering Robert McNamara, Robert Ulichney 1997-02-11
5307292 Method of quantifying the topographic structure of a surface Christopher A. Brown, William Johnsen 1994-04-26