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

Keith M. Kotchick — 31 Patents

3M: 30 patents #350 of 11,543Top 4%
Saint Paul, MN: #42 of 620 inventorsTop 7%
Minnesota: #1,863 of 52,454 inventorsTop 4%
Overall (All Time): #119,139 of 4,157,543Top 3%
31 Patents All Time

Issued Patents All Time

Showing 26–31 of 31 patents

Patent #TitleCo-InventorsDate
6642977 Liquid crystal displays with repositionable front polarizers Hassan Sahouani 2003-11-04
6624936 Color-compensated information displays Ikuko Ebihara, Gregory E. Gilligan 2003-09-23
6576887 Light guide for use with backlit display Leland R. Whitney, Gary T. Boyd, Kenneth A. Epstein, Sanford Cobb, Jr., Philip E. Watson +2 more 2003-06-10
6574044 Polarizer constructions and display devices exhibiting unique color effects Hassan Sahouani, Kim M. Vogel, Mark B. O'Neill, William A. Hibbard, Robert S. Moshrefzadeh 2003-06-03
6280063 Brightness enhancement article Bettie C. Fong, Wade D. Kretman, Sanford Cobb, Jr., Richard A. Miller, Todd R. Williams +1 more 2001-08-28
5919551 Variable pitch structured optical film Sanford Cobb, Jr., Mark E. Gardiner, Kazuhiko Toyooka, William A. Hibbard 1999-07-06